Leakey, Richard E. <br/><br/>
The sixth extinction  patterns of life and the future of humankind /  [[Book] :] 
Richard Leakey and Roger Lewin. 
 - 1st ed. 
 - New York :  Doubleday,  1995. 
 - 271 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. [255)-262) and index. 
<br/><br/> All age. 
<br/><br/><label>ISBN: </label>0385424973 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature--Effect of human beings on.<br/>Evolution (Biology).<br/>Extinction (Biology).
<br/><br/><label>Dewey Class. No.: </label>304.2 
<br/><br/><label>National Library of Medicine Call No.: </label> / L S