Banijyik prabesika 
By Krishnakanta kalita 
 - 2nd ed. 
 - Guwahati:  Brua agency,  1990. 
 - x,320p. 
<br/><br/><label>Subjects--Index Terms: </label>Office services Banijyik prabesika 
<br/><br/><label>Dewey Class. No.: </label>651