Swarup, R., Mishra, S.N. and Jauhari, V.P. <br/><br/>
Encyclopaedia of ecology , environment and pollution control  environmental water resources quality , demand ,pollution 

 - New Delhi  Mittal publications  1992 
 - 277p.  V.12 
<br/><br/><label>ISBN: </label>8170993725  395 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology & environment-encyclopaedia<br/>Encyclopaedia
<br/><br/><label>Dewey Class. No.: </label>577.03  / SWA