Encyclopedia of environmental information sources / 
Sarojini Balachandran, editor 
 - Detroit, Mich. :  Gale Research Co.,  1993 
 - 1813 p. ;  28 cm. 
<br/><br/> 'A Subject guide to about 34,000 print and other sources of information on all aspects of the environment' 
<br/><br/><label>ISBN: </label>0810385686 
<br/><br/><label>LCCN: </label>92-10925 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection--Bibliography<br/>Ecology--Bibliography<br/>Conservation of natural resources--Bibliography