National seminar on patents systems:   No. 28-29, 1981  
/ National Geophysical Research Institute  
 - Hyderabad:   National Geophysical Research Institute,   1981 
 - 208p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library 
<br/><br/><label>Subjects--Index Terms: </label>Patent processing  Technology  
<br/><br/><label>Universal Decimal Class. No.: </label>D 002:608](082.2)   / M1