Report on the working of the patent office 1942-1955 

 - Delhi  Manager of Publications          1950 
<br/><br/> 1942-48 (37p), App.: 28-37p; 1949 (22p), App.: 11-22p; 1950 (22p), App.: 14-22p; 1951 (23p), App.: 15-23p;; 1952 (22p), App.: 12-22p; 1953 (22p), App.: 12-22p; 1954 (23p), App.: 12-23p; 1955 (27p), App.: 14-27p 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Z2, 2673.N48-N42r, J0