Proceedings of symposium on drilling technology and engineering aids to geological exploration, Calcutta, 12th to 15th February 1980. 

 - Calcutta :  Geological Survey of India,  1980. 
 - xxi, 637 p. : 
 - Social demography .
<br/><br/> "Working Group on Population Growth and Economic Development; Committee on Population, Commission on Behavioral and Social Sciences and Education, National Research Council." 
<br/><br/><label>ISBN: </label>029911130X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Food supply--Developing countries.
<br/><br/><label>Dewey Class. No.: </label>622.23  / Pr