Duwey, Vidhayasagar <br/><br/>
Bhoo Vigyaan: Ek Parichay 
 भू विज्ञान: एक परिचय 

 - Bhopal  Madhya Pradesh Hindi Granth Academy   1972 
 - 636 p. 
<br/><br/><label>Dewey Class. No.: </label>550  / V