- On the Wings of Checkerspots: A Model System for Population Biology 
 - New World New Mind: Moving Toward Conscious Evolution by Robert E. Ornstein, Paul Ehrlich,  2000-09
 - Reef Fishes of the Sea of Cortez: The Rocky-Shore Fishes of the Gulf of by Donald A. Thomson, Lloyd T. Findley, et all  2000-05-15
 - German Essays on Science in the 19th Century: Paul Ehrlich, Alexander von Humboldt, Werner Von Sieme (German Library) by Wolfgang Schirmacher,  1996-09-01
 - Birds in Jeopardy: The Imperiled and Extinct Birds of the United States and Canada by Paul Ehrlich, David Dobkin, et all  1992-03-01
 - The Population Bomb by Paul R. Ehrlich,  1970-05-01
 - Collected Studies On Immunity by Paul Ehrlich,  2010-01-11
 - Gesammelte Arbeiten zur Immunitätsforschung (German Edition) by Paul Ehrlich,  2010-05-13
 - The Machinery of Nature by Paul R. Ehrlich,  1987-02
 - Healing the Planet: Strategies for Resolving the Environmental Crisis by Paul R. Ehrlich, Anne H. Ehrlich,  1992-09
 - Extinction by Paul R. Ehrlich,  1983-03-12
 - How To Know the Butterflies by Paul Ehrlich, 
 - Human Natures by Paul R. Ehrlich,  2000-08-01
 - Extinction: The Causes and Consequences of the Disappearance of Species by Paul Ehrlich, Anne Ehrlich,  1989
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