Research Journal of the Water Pollution Control Federation. 
 Journal Water Pollution Control Federation  Research Journal WPCF  JWPCF 

 - Alexandria :  The Federation,  1989-1991. 
 -  28 cm. 
 - Dwumies. 
 - Vol. 61, no. 9 (Sept. 1989) - vol. 63, no. 7 (Nov. / Dec.1991). 
<br/><br/><label>ISSN: </label>1047-7624 
 = Research Journal of the Water Pollution Control Federation 
 = Res. J. Water Pollut. Control Fed. 
<br/><br/><label>Universal Decimal Class. No.: </label>628.2/.3 :  628.54