The International Geophysical Year, 1957-1958 / 
National Physical Laboratory, Council of Scientific and Industrial Research 
 - New Delhi :  National Physical Laboratory ,  1957 
 - v. ;  28 cm. 
 - Annual,  1957-1958 
 - (1957-1958) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Inida
<br/><br/><label>Dewey Class. No.: </label>551