Vikas objective book of knowledge /  
Ajay Rai 
 - Gaziabad :  Vikas publishing house,  1980. 
 - vi, 225 p.:  18cm 
<br/><br/><label>ISBN: </label>070690947x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General knowledge
<br/><br/><label>Dewey Class. No.: </label>001