Environmental encyclopedia / 
William P. Cunningham (editors) 
 - Detroit, Mich. :  Gale Research Co.,  1994 
 - 981 p. :  ill. ;  29 cm. 
 - Gale environmental library .
<br/><br/><label>ISBN: </label>0810349868  RM606.54 0810388561  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Encyclopedias<br/>Ecology--Encyclopedias<br/>Earth sciences--Encyclopedias