Books in Browsing: Science - Genetics/Biology/Evolution (sorted alphabetically by author)
- An Introduction to Entomology: Vol. 1 William Kirby and William Spence
- Radioisotopes and Life Processes (Revised) Walter E. Kisieleski and Renato Baserga
- Fauna der Nassauischen Mollusken (German) Wilhelm Kobelt
- The Farmer's Own Book: A treatise on the numerous diseases of the horse J. D. Koogle
- North American Jumping Mice (Genus Zapus) Philip H. Krutzsch
- Human Origins S. Laing
- An Expository Outline of the "Vestiges of the Natural History of Creation" S. Laing
- Zoölogische Philosophie (Dutch) Jean Baptiste Pierre Antoine de Monet de Lamarck
- Degeneration: A Chapter in Darwinism Sir E. Ray Lankester
- Text book of veterinary medicine, Volume 2 (of 5) James Law
- Evolution: Its nature, its evidence, and its relation to religious thought Joseph LeConte
- The Mechanism of Life Stéphane Leduc
- The octopus : or, The "devil-fish" of fiction and of fact Henry Lee
- A New Snake of the Genus Geophis From Chihuahua, Mexico John M. Legler
- A New Tortoise, Genus Gopherus, From North-central Mexico John M. Legler
- Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz John M. Legler
- Embryology: The Beginnings of Life Gerald R. Leighton
- Grundriß der menschlichen Erblichkeitslehre und Rassenhygiene (2/2) (German) Fritz Lenz
- The Systematics of the Frogs of the Hyla Rubra Group in Middle America Juan R. León
- Stories of the Universe: Animal Life B. Lindsay
- Researches on the Visual Organs of the Trilobites Gustaf Lindström
- Species Plantarum, Sections VI-X (Latin) Carl von Linné
- Species Plantarum, Sections I-III (Latin) Carl von Linné
- Species Plantarum, Sections XI-XIII (Latin) Carl von Linné
- Species Plantarum, Sections IV-V (Latin) Carl von Linné