Parker, Sybil B. <br/><br/>
Encyclopedia of Enviornmental Science 
Mcgraw -Hill 
 - 2 
 - New Delhi  McGraw- Hill Book Company  1977 
 - 858 
<br/><br/><label>ISBN: </label>0070452644 
<br/><br/><label>Publisher. No.: </label> L.B.Publishers and DistributorsPvt.Ltd. 
<br/><br/><label>Subjects--Personal Names: </label> Sociology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociology