Open Library
Science
The universe explained, imperfectly.

Renewable energy resources
John Twidell

Fragments of science
John Tyndall

Essential Cell Biology
Bruce Alberts

Human anatomy and physiology laboratory manual
Elaine Nicpon Marieb
Oceanography and Marine Biology
S. J. Hawkins

Advances in the study of behavior
H. Jane Brockmann

The Human Use of Human Beings
Norbert Wiener

Consciousness
Susan J. Blackmore

Dialektik der Natur
Friedrich Engels

Meaning of Relativity
Albert Einstein

The Immortal Life of Henrietta Lacks
Rebecca Skloot

De caelo
Aristotle
PE Civil Exam Review Guide
School of PE
Insect-Plant Interactions
Elizabeth A. Bernays

Botany
James D. Mauseth

An introduction to logic and scientific method
Morris Raphael Cohen

College physics
Raymond A. Serway

The Human Body
Isaac Asimov

Reason, social myths and democracy
Sidney Hook

Science in history
J. D. Bernal