Singh, Vishnudev <br/><br/>
Gyanvardhak rochak ganit vigyan / 
Vishnudev Singh 
 - New Delhi :  Archana Publications,  2016. 
 - 103 p. ;  20 cm. 
<br/><br/><label>ISBN: </label>9788189242121 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathemetics<br/>Geometry
<br/><br/><label>Dewey Class. No.: </label>516  / SIN