Biological indicators and indices of environmental pollution:  
/ Proceedings of the workshop held at Osmania University, Hyderabad, India during 21-23 September, 1981 under a WHO grant  
 - New Delhi:   Central Board for the Prevention and Control of Water Pollution,   1982 
 - 209p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>504.3.06(082.2)   / M2