Singhal; Om Prakash,Asha Rani and Priyadarshani;Pritama <br/><br/>
Grah vigyan ke mul sidhant  Hindi 

 - 10th ed. 
 - Allahabad  Kitab Mahal  1974 
 - 840 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Home Science
<br/><br/><label>Dewey Class. No.: </label>640 H74;1