Rai, Ajay. <br/><br/>
Vikas objective book of knowledge / 
Ajay Rai. 
 - Ghaziabad (India) :  Vikas publishing house,  1980 
 - xi, 225 p. :  21 cm. 
<br/><br/><label>ISBN: </label>070690947x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education.
<br/><br/><label>Dewey Class. No.: </label>1  / AJA 1980