Control and sensing of environmental quality 
edited by R. Swarup, S.N. Mishra and V.P. Jauhari 
 - New Delhi  Mittal  1992 
 - 448p. 
<br/><br/> Encyclopaedia of ecology, environment and pollution control 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>O91 Sw26/v.8 (R)