Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3000 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 2827 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1249 downloads
- Darwinism (1889) Alfred Russel Wallace 1102 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 418 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 383 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 379 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 317 downloads
- The Foundations of the Origin of Species Charles Darwin 286 downloads
- An Elementary Study of Insects Leonard Haseman 277 downloads
- The History of Insects Unknown 252 downloads
- Social Life in the Insect World Jean-Henri Fabre 231 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 206 downloads
- Birds of the Indian Hills Douglas Dewar 201 downloads
- The Life-Story of Insects George H. Carpenter 183 downloads
- Our Common Insects A. S. Packard 174 downloads
- On the Origin of Species Charles Darwin 169 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 160 downloads
- The Human Side of Animals Royal Dixon 143 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 128 downloads
- Fathers of Biology Charles McRae 116 downloads
- Birds in Town & Village W. H. Hudson 115 downloads
- Lamarck, the Founder of Evolution: His Life and Work A. S. Packard 111 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 109 downloads
- What is Darwinism? Charles Hodge 108 downloads
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