Ehrlich, Paul. <br/><br/>
Extinction :  the causes and consequences of the disappearance of species / 
by Paul and Anne Ehrlich. 
 - New York :  Random House,  c1981. 
 - xiv, 305 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Should we mourn dinosaurs? -- The origin of species--and their extinction -- Compassion, esthetics, fascination, and ethics -- Direct Economic benefits of preserving species -- Indirect benefits: Life-Support systems -- Direct endangering -- Indirect endangering -- The politics of extinction -- Zoos, reserves, and preservation: The tactics of conservation -- The strategy of conservation. 
<br/><br/><label>ISBN: </label>0394513126 
<br/><br/><label>LCCN: </label>8006036 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature conservation.<br/>Endangered species.<br/>Extinct animals.