Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 5952 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1800 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 585 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 520 downloads
- An Elementary Study of Insects Leonard Haseman 412 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 397 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 380 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 311 downloads
- Social Life in the Insect World Jean-Henri Fabre 307 downloads
- Anecdotes of the Habits and Instinct of Animals Mrs. R. Lee 230 downloads
- Birds of the Indian Hills Douglas Dewar 204 downloads
- De l'origine des espèces (French) Charles Darwin 197 downloads
- What is Darwinism? Charles Hodge 195 downloads
- Darwinism (1889) Alfred Russel Wallace 192 downloads
- The Human Side of Animals Royal Dixon 191 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 187 downloads
- The Life-Story of Insects George H. Carpenter 179 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 169 downloads
- On the Genesis of Species St. George Jackson Mivart 164 downloads
- The History of Insects Unknown 162 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 162 downloads
- Birds in Town & Village W. H. Hudson 161 downloads
- Text Book of Biology, Part 1: Vertebrata H. G. Wells 157 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 155 downloads
- Evolution, Old & New Samuel Butler 155 downloads
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