Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3069 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1378 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 1375 downloads
- Darwinism (1889) Alfred Russel Wallace 1082 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 428 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 410 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 365 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 324 downloads
- The History of Insects Unknown 256 downloads
- An Elementary Study of Insects Leonard Haseman 253 downloads
- Social Life in the Insect World Jean-Henri Fabre 226 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 202 downloads
- Birds of the Indian Hills Douglas Dewar 189 downloads
- The Life-Story of Insects George H. Carpenter 171 downloads
- Our Common Insects A. S. Packard 167 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 150 downloads
- On the Origin of Species Charles Darwin 147 downloads
- The Human Side of Animals Royal Dixon 146 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 135 downloads
- Lamarck, the Founder of Evolution: His Life and Work A. S. Packard 103 downloads
- Fathers of Biology Charles McRae 103 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 102 downloads
- What is Darwinism? Charles Hodge 99 downloads
- Darwin and Modern Science A. C. Seward 98 downloads
- Birds in Town & Village W. H. Hudson 96 downloads
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