Directory of environmental information sources / 
 Environmental information sources 
edited by Thomas F.P. Sullivan ; compiled by editorial staff, Government Institutes, Inc. 
 - 5th ed. 
 - Rockville, Md. :  Government Institutes,  c1995. 
 - xxxi, 299 p. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0865874751 
<br/><br/><label>LCCN: </label>95212745  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--United States--Directories.--Information services<br/>Environmental sciences--Bibliography.--United States<br/>Environmental sciences--Bibliography.
<br/><br/><label>LC Class. No.: </label>GE30  / .D57 1995 
<br/><br/><label>Dewey Class. No.: </label>363.7/0025/73