Annual editions :  environment 97/98 / 
edited by John L. Allen 
 - 16th ed. 
 - Guilford, Conn. :  Dushkin Pub. Group,  1997 
 - 272 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0697372669  RM67.74 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences<br/>Human ecology