Negi Balbir Singh <br/><br/>
Bhotik bhugol tatha bhugarbhshastra ke sidhant 

 - Allahabad  Kitab Mahal India          1968 
 - 665p. Glossary p. 624-45  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical Geography
<br/><br/><label>Dewey Class. No.: </label>U2, K8