Johnson, Willis H.  1902-1994. <br/><br/>
The environmental challenge, 
edited by Willis H. Johnson [and] William C. Steere. 
 - New York,  Holt, Rinehart and Winston  [1974] 
 - viii, 357 p.  illus.  23 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0030841852 
<br/><br/><label>LCCN: </label>73003947  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Environmental protection.
<br/><br/><label>LC Class. No.: </label>QH541  / .J65 
<br/><br/><label>Dewey Class. No.: </label>301.31