Chitkara, M. G <br/><br/>
Encyclopaedia of ecology, environment and pollution : science, technology and environment 
M.G. Chitkara 
 - 1st ed 
 - New Delhi  A. P. H. Pub. Corp  1998 
 - xv, 155 p. ; 26 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>8170248868 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection<br/>Pollution--Environmental aspects
<br/><br/><label>Dewey Class. No.: </label>577.03 CHI