International congress proceedings 

 - Bombay:   Industrial Publications,   1978 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technology
<br/><br/><label>Subjects--Index Terms: </label>Pollution control Waste water 
<br/><br/><label>Universal Decimal Class. No.: </label>I 66(082.2)  / L6;L8