Than, Om Prakash <br/><br/>
Dak- ticket sangraha (h) 

 -  Rajpal & Sons, Delhi  1979 
 - 76 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philately
<br/><br/><label>Dewey Class. No.: </label>H 769.54  THA-D