52.
Ecoscience: Population, Resources, Environment
by Ehrlich, Paul R., Ehrlich, ...
ISBN: 9780716705673
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Annihilation of Nature : Human Extinction of Birds and Mammals
by Ceballos, Gerardo, Ehrlich,...
ISBN: 9781421417189
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55.
On the Wings of Checkerspots A Model System for Population Biology
by Ehrlich, Paul R., Hanski, I...
ISBN: 9780195158274
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56.
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Killing the Koala and Poisoning the Prairie : Australia, America, and the Environment
by Ehrlich, Paul R., Bradshaw,...
ISBN: 9780226316987
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Ecology and Management of Cowbirds and Their Hosts Studies in the Conservation of North Amer...
by Smith, James N. M., Cook, T...
ISBN: 9780292777385
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How to be a Survivor A Plan to Save Spaceship Earth
by RICHARD L HARRIMAN' 'PAUL R...
ISBN: 9780345021250
60.
Extinction: The Causes and Consequences of the Disappearance of Species - Paul R. Ehrlich - ...
by Ehrlich, Paul R., Ehrlich, ...
ISBN: 9780345330949
61.
Stork and the Plow: The Equity Answer to the Human Dilemma
by Ehrlich, Paul R., Ehrlich, ...
ISBN: 9780399140747
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62.
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Stork and the Plow The Equity Answer to the Human Dileman
by Ehrlich, Paul R., Daily, Gr...
ISBN: 9780300071245
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66.
American Ecologists : E. O. Wilson, William Beebe, Howard T. Odum, Ed Ricketts, Lester R. Br...
by Llc, Books
ISBN: 9781155887517
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Agrarian Theorists, including: James Lovelock, Thomas Robert Malthus, Friedensreich Hundertw...
by Hephaestus Books
ISBN: 9781244515888
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Potency Testing of Veterinary Vaccines for Animals : The Way from in Vivo to in Vitro: Lange...
by Jungb�ck, Carmen, Paul-Ehrl...
ISBN: 9783805598927
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The Golden Door: International Migration, Mexico, and the United States
by Paul R. Ehrlich
ISBN: 9780345277923