Biology The Science of Life, Student Book, by Robert A. Wallace-Gerald P. Sanders-Rovert J. Ferl, third edition, published by HarperCollinsPublishers, copyright 1991, 1245 pages plus, hardcover. This student book contains information about Molecules to Cells, Molecular Biology and Heredity, Evolution, Diversity and Function:Microorganisms and Fungi, Diversity and Function:Plants, Diversity and Function:Animals, Behavior and Ecology, and more. The outside cover is in good condition. The pages are in good condition.