Chttoupadhayay, Devi prasad  <br/><br/>
Pracheen bharat me vigyaan aur samaj 

 - Delhi    Granth silpi  2009 
 - 493 
<br/><br/><label>ISBN: </label>81-7917-014-4 
<br/><br/><label>Dewey Class. No.: </label>934  / devi pra