World literature on patents (1900-1982)  
/ National Seminar on Patents System Regional Research Laboratory 28-29 November 1981 
 - Hyderbad:   National Seminar on Patents System Regional Research Laboratory  1981 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliography
<br/><br/><label>Subjects--Index Terms: </label>Patents  
<br/><br/><label>Universal Decimal Class. No.: </label>R 016:608.3   / M3