Ehrlich, Paul R. <br/><br/>
Extinction :  the causes and consequences of the disappearance of species / 
Paul and Anne Ehrlich 
 - New York :  Random House,  1981 
 - xiv, 305 p. ;  25 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature conservation<br/>Ecology<br/>Endangered species<br/>Extinct animals