Singh, Arvind Kumar. <br/><br/>
Bharatiya dak :  sadiyon ka sararnama / 
Arvind Kumar Singh. 
 - New Delhi :  National Book Trust,  2006. 
 - 404p. 
<br/><br/><label>ISBN: </label>8123747949 :  Rs. 125/- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Postal service--History--India.<br/>India--Postal systems.<br/>Postage stamps.<br/>Postal service--Employees--India.