Rupesinghe, Harsha F. <br/><br/>
The machine postmarks of Sri Lanka 

 - s.l.  Harsha F. Rupesinghe  2018 
 - x, 164 p.  Illustration 
<br/><br/><label>ISBN: </label>9789553899705 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOOKS BOX B1758<br/>POSTMARKS<br/>POSTMARKS COLLECTOR AND COLLECTING<br/>SRI LANKA
<br/><br/><label>Dewey Class. No.: </label>B1758  / LDC