Patents systems 
/ National seminar on patents systems 28-29 Nov, 1981.........................Hyderabad 
 - New Delhi:   Council of Scientific & Industrial Research,   1981 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Seminar papers
<br/><br/><label>Universal Decimal Class. No.: </label>608.3(063)  / M1