Ayyangar, N. Rajagopala <br/><br/>
Report on the Revision of the Patents Law, September 1959 
by Ayyangar, N. Rajagopala 
 - Delhi  Manager of Publications  1959 
 - 397p. 
<br/><br/><label>Dewey Class. No.: </label>T2403x54 A/R/1959