Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3202 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1456 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 1369 downloads
- Darwinism (1889) Alfred Russel Wallace 1058 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 445 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 410 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 350 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 331 downloads
- The History of Insects Unknown 270 downloads
- An Elementary Study of Insects Leonard Haseman 258 downloads
- Social Life in the Insect World Jean-Henri Fabre 216 downloads
- Birds of the Indian Hills Douglas Dewar 191 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 189 downloads
- Our Common Insects A. S. Packard 173 downloads
- The Life-Story of Insects George H. Carpenter 169 downloads
- The Human Side of Animals Royal Dixon 154 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 150 downloads
- On the Origin of Species Charles Darwin 136 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 125 downloads
- The Origin of Species Thomas Henry Huxley 122 downloads
- Darwin and Modern Science A. C. Seward 112 downloads
- Fathers of Biology Charles McRae 108 downloads
- Evolution in Modern Thought 102 downloads
- Birds in Town & Village W. H. Hudson 102 downloads
- Lamarck, the Founder of Evolution: His Life and Work A. S. Packard 100 downloads
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