The environmental challenge /    
edited by Willis H. Johnson [and] W illiam C. Steere. 
 - New York :   Holt, Rinehart and Winston,   1974 
 - viii, 357 p. :    ill. ;    23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0030841852 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--------<br/>Environmental protection--------
<br/><br/><label>Dewey Class. No.: </label>363.7