Status and trend of water quality of river Ganga 1983-1989 
by Central Pollution Control Board 
 - Delhi  Central Pollution Control Board  1990 
 - 227p. 
 - Monitoring of Indian national aquatic resources series: minars/6/1990-91 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water pollution - India<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>O91 S29