Proceedings. Ed by R L Singh 

 - Varanasi  N G S I         1973 
 - xviii, 371p  cm. 
 - National Geographical Society of India, Publication. Twenty First International Geographical Congress .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U43p1(X),N68, L3