Encyclopaedia of Environmental Sciences : Management of Environmental Education and Research  Vol. 19 

 - New Delhi :   Akashdeep Publishing House,   1992. 
 - viii, 254p.;  21cm 
<br/><br/><label>ISBN: </label>8171582745 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>304.203  / ENC