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The Lives of Spiders: A Natural History of the World's Spiders

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Las arañas son depredadores dominantes en prácticamente todos los ecosistemas terrestres del planeta. Una maravilla...

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The Machines of Evolution and the Scope of Meaning

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What is meaning? How does it arise? Where is it found in the world? In...

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The Mack: Charles Rennie Mackintosh and the Glasgow School of Art

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The most up-to-date account of the Scottish architect and designer Charles Rennie Mackintosh’s masterwork The Mackintosh...

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The Mind of a Bee

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Most of us are aware of the hive mind—the power of bees as an amazing...

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The Mind of the Horse: An Introduction to Equine Cognition

$ 39.95 USD

Horses were first domesticated about 6,000 years ago on the vast Eurasian steppe extending from...

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The Mobile Image from Watteau to Boucher

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Reframing long-held assumptions about what distinguishes fine from decorative art, this innovative study explores a...

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The Nature of Nature: Why We Need the Wild

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In this spirited memoir, world-renowned conservationist Enric Sala weaves fascinating tales of the natural world,...

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The Nature of Tomorrow: A History of the Environmental Future

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An examination of how Western visions of endless future growth have contributed to the global...

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The Network of Life A New View of Evolution

$ 27.95 USD

In The Network of Life, David Mindell explains why the conventional narrative of evolution needs to...

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The New Encyclopedia of Snakes

$ 27.99 USD $ 35.00 USD

Comprehensive, up-to-date, and richly illustrated with some 200 color photographs, The New Encyclopedia of Snakes...

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The New Neotropical Companion

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The acclaimed guide to the ecology and natural history of the American tropics, now fully...

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The North Pacific Killer Whale Behaviors field

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The North Pacific Killer Whale Behaviors field guide includes illustrations and descriptions of all fifteen...

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The North Pacific Marine Mammals field

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The North Pacific Marine Mammals field guide contains illustrations and descriptions of all the cetaceans...

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The Oceans: A Deep History

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The 4.4-billion-year history of the oceans and their role in Earth's climate system It has...

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The Ornithologist's Dictionary ²⁵

$ 35.75 USD

An invaluable reference resource, written in concise language and with an intuitive layout, The Ornithologist’s...

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The Outer Limits of Reason: What Science, Mathematics, and Logic Cannot Tell Us

$ 29.95 USD

Many books explain what is known about the universe. This book investigates what cannot be...

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The Oxford Handbook of Animal Organization Studies (Oxford Handbooks)

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Just as climate change and environmental sustainability have become growing concerns in public discourse, so...

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The Pivotal Generation: Why We Have a Moral Responsibility to Slow Climate Change Right Now

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Climate change is the supreme challenge of our time. Yet despite growing international recognition of...

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The Princeton Field Guide to Dinosaurs Third Edition (Princeton Field Guides)

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The bestselling Princeton Field Guide to Dinosaurs remains the must-have book for anyone who loves...

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The Princeton Field Guide to Mesozoic Plants

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The Mesozoic was dominated by a spectacular array of flora, from ferns, conifers, and cycads...

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The Princeton Field Guide to Predatory Dinosaurs

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An authoritative illustrated guide to the fearsome predators that dominated the Mesozoic world for 180...

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The Princeton Field Guide to Pterosaurs

$ 29.95 USD

Once seen by some as evolutionary dead-enders, pterosaurs were vigorous winged reptiles capable of thriving...

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The Restless Cell: Continuum Theories of Living Matter

$ 85.00 USD

An essential introduction to the physics of active matter and its application to questions in...

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The Rise and Fall of Animal Experimentation: Empathy, Science, and the Future of Research

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Every year, hundreds of millions of animals are used in the service of biomedical research,...

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The Rules of the Flock: Self-Organization and Swarm Structure in Animal Societies

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Flocks of birds, schools of fish, and swarms of locusts display amazing forms of collective...

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The Science of Animal Welfare

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What is animal welfare? Why has it proved so difficult to find a definition that...

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The Sixth Element: How Carbon Shapes Our World

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A cosmic perspective on carbon—its importance in the universe and our lives. When we think...

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The Sounds of Life: How Digital Technology Is Bringing Us Closer to the Worlds of Animals and Plants

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An amazing journey into the hidden realm of nature’s sounds. The natural world teems with...

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The Sounds of Life: How Digital Technology Is Bringing Us Closer to the Worlds of Animals and Plants

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An amazing journey into the hidden realm of nature’s sounds. The natural world teems with...

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The Spirit of the Hive: The Mechanisms of Social Evolution

$ 39.95 USD

Charles Darwin struggled to explain how forty thousand bees working in the dark, seemingly by...

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The Turtles of Mexico: Land and Freshwater Forms

$ 125.00 USD – Sold Out

The Turtles of Mexico is the first comprehensive guide to the biology, ecology, evolution, and...

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The Unfeathered Bird

$ 49.95 USD

There is more to a bird than simply feathers. And just because birds evolved from...

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The Unpredictable Species: What Makes Humans Unique

$ 29.95 USD

The Unpredictable Species argues that the human brain evolved in a way that enhances our...

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The Violinist Thumb

$ 16.00 USD

In The Disappearing Spoon, bestselling author Sam Kean unlocked the mysteries of the periodic table....

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The Voices of Nature How and Why Animals Communicate

$ 32.00 USD

What is the meaning of a bird’s song, a baboon’s bark, an owl’s hoot, or...

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The War of the Sexes: How Conflict and Cooperation Have Shaped Men and Women from Prehistory to the Present

$ 24.95 USD

As countless love songs, movies, and self-help books attest, men and women have long sought...

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The Warbler Guide

$ 29.95 USD

Warblers are among the most challenging birds to identify. They exhibit an array of seasonal...

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The West without Water: What Past Floods, Droughts, and Other Climatic Clues Tell Us about Tomorrow

$ 29.95 USD

The West without Water documents the tumultuous climate of the American West over twenty millennia,...

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The Wingsnappers

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Birds, hormones, and extraordinary behavior: The story of the tiny but mighty golden-collared manakin of...

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The World Atlas of Deserts and Drylands

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Deserts and drylands account for more than 40 percent of land on our planet. Characterized...

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The World Atlas of Rivers, Estuaries, and Deltas

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A stunningly illustrated atlas of the world’s rivers, estuaries, and deltas, and their ecosystems. From...

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The World Atlas of Trees and Forests: Exploring Earth's Forest Ecosystems

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The earth’s forests are havens of nature supporting a diversity of life. Shaped by climate...

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The World's Rarest Birds

$ 45.00 USD

This beautifully illustrated book vividly depicts the most threatened birds on Earth. It provides up...

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ThunderBolt U1 Storm & Lightning Detector Expedition Package - Discontinued

$ 1,120.95 USD

The ThunderBolt U1 Storm & Lightning Detector is totally self-contained and detects the storm directly using the electromagnetic signals of the lightning to provide instant storm warning. Portable and easy to use, the proprietary software turns the complexities of storm tracking into simple text messages displayed on a backlit LCD, detecting storms out to distances of 75 miles, determining distance and approach speed (ETA), and immediately warning a user when a storm becomes a local threat. The ThunderBolt also features a TIME TO CLEAR function which lets the user know when it is safe to resume outdoor activities. Unit comes in a rugged, hard carry case.

• Specifications
• In the Box
• Required Items
• Optional Items

• - Highest grade durable plastic
  - Fully gasketed (water resistant)
  - 75 mile storm detection range
  - Text message library containing over 50 messages for different storm situations
  - Calculates approach speed and ETA
  - Connector for Storm Vector wireless warning system
• - ThunderBolt Storm & Lightning Detector U1 (1)
  - Yellow, waterproof lockable Pelican carrying case (1)
  - Aquapac waterproof case (1)
  - 110-volt or 220-volt AC power adapter (1 of your choice)
  - 9-volt Duracell PROCELL battery (3)
  - Rechargeable extended service lithium ion battery pack (1)
  - 12-volt DC car power adapter (1)
  - Black MOLLE field carry pouch (6.5" by 4.5" and is 2" wide (expands to 4" wide) (1)
  - Deskstand (1)
  - High-brightness NEMO waterproof LED flashlight (1)
  - Instruction manual (1)
• None
• - ThunderBolt Rechargeable Lithium Battery Pack
  - Duracell PROCELL 9-Volt Battery

Detector de Tormentas & Relámpagos ThunderBolt U1 Paquete Expedición

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ThunderBolt U1 Storm & Lightning Detector Standard Package - Discontinued

$ 650.95 USD

The ThunderBolt U1 Storm & Lightning Detector is totally self-contained and detects the storm directly using the electromagnetic signals of the lightning to provide instant storm warning. Portable and easy to use, the proprietary software turns the complexities of storm tracking into simple text messages displayed on a backlit LCD, detecting storms out to distances of 75 miles, determining distance and approach speed (ETA), and immediately warning a user when a storm becomes a LOCAL threat. The ThunderBolt also features a TIME TO CLEAR function which lets the user know when it is safe to resume outdoor activities. Unit comes in a rugged, hard carry case.

• Specifications
• In the Box
• Required Items
• Optional Items

• - Highest grade durable plastic
  - Fully gasketed (water resistant)
  - 75 mile storm detection range
  - Text message library containing over 50 messages for different storm situations
  - Calculates approach speed and ETA
  - Connector for Storm Vector wireless warning system
• - ThunderBolt Storm & Lightning Detector U1 (1)
  - Hard Case (1)
  - 110-volt or 220-volt AC power adapter (1 of your choice)
  - 9-volt Duracell PROCELL battery (1)
  - Instruction manual (1)
  - Black MOLLE field carry pouch (6.5" by 4.5" and is 2" wide (expands to 4" wide) or Desk Stand (1 of your choice)
• None
• - ThunderBolt Rechargeable Lithium Battery Pack
  - Duracell PROCELL 9-Volt Battery
  - MOLLE Field Carry Pouch (Included in your choice)
  - Deskstand (Included in your choice)

Detector de Tormentas & Relámpagos ThunderBolt U1 Paquete Estándar

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Timefulness: How Thinking Like a Geologist Can Help Save the World

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Few of us have any conception of the enormous timescales of our planet’s long history,...

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Titley Scientific Song Meter Chorus Acoustic and Ultrasonic Recorder

$ 560.00 USD

The Chorus is an affordable, customizable wildlife recorder, designed for tough field conditions. AVAILABLE TO...

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Tolcide PS Biocides Test Kit ²⁵

$ 556.25 USD

Tolcide PS: Rapid Test Kit for Biocides with THPS

Effectively measures tetrakis(hydroxymethyl)phosphonium sulfate (THPS) in freshwater and saltwater systems. Ideal for oilfields, cooling towers, and industrial applications.

The Tolcide PS Biocides Test Kit by Solvay is a precise analytical tool designed to determine concentrations of THPS (tetrakis(hydroxymethyl)phosphonium sulfate), a widely used biocidal agent in water treatment. It uses a direct-reading iodometric titration system and can be applied in both freshwater and saltwater environments, including oilfield industries, paper mills, and cooling towers. With a sensitivity of up to 2 ppm and a capacity of 60 tests, this kit is essential for monitoring active THPS levels and maintaining safe and effective conditions in industrial water systems.

Key Features:

• Accurate THPS Detection: Based on direct iodometric titration for reliable results in the field or laboratory.
• Measurement Range: From 0 to 100 ppm, with a resolution of 2 ppm.
• Versatile Applications: Works in fresh or salt water for oilfields, towers, pulp and paper plants.
• Complete Kit: Includes all necessary reagents and accessories to get started immediately.
• Interference Treatment: Includes zinc acetate to remove hydrogen sulfide if present.

• Specifications
• In the Box
• Optional Items
• Documents

• Specification	Detail
  Test Factor	THPS in Tolcide PS biocides
  Method	Direct Reading Titrator (iodometry)
  Range/Sensitivity	0–100 ppm / 2 ppm resolution
  Number of Tests	60
  Number of Reagents	5
  Interferences	H2S (removed with zinc acetate)
  Weight with Packaging	1 lb

• • 240 mL Borate Buffer Solution (Code: 4135-J)
  • 120 mL PSSA Solution (Code: 4134-J)
  • 30 mL Starch Indicator Solution (Code: 4170WT-G)
  • 60 mL Iodine Solution 0.025N (Code: 6377-H)
  • 15 mL Zinc Acetate 2N (Code: 3843-E)
  • 1 Plastic test tube with caps and volume marks (Code: 0715)
  • 3 Pipettes of 1 mL (Code: 0354)
  • 1 Direct Reading Titrator 0–100 (Code: 0381)
  • 1 Iodine dispensing cap (Code: 0601)
• • Filters for precipitates if Zinc Acetate is used
  • Safety gloves and protective goggles
• • Instructions

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