Fourth International Gondwana Symposium :  papers / 
Chairman editor committee, B. Laskar and C. S. Raja Rao 
 - Delhi :  Hindustan Publishing Corporation,  1979 
 - 2v. ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gondwana (Geology)--Congresses