World environment directory 

 - 4th ed. 
 - Michigan  Business Publishers  1980 
 - cxxviii,965p.   : ill.   ; 28cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0916742040 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineers<br/>Environmental protection<br/>Environment<br/>Directories
<br/><br/><label>LC Class. No.: </label>IRA REF TD12.W65