Malhotra; Maharaj  Narayana <br/><br/>
Prithivi ki  aayu  Hindi 

 - 2nd ed. 
 - Lucknow  Hindi sahitya aedeamy  1967 
 - 284pg 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>551.7 M46P