Singh, Nagendra Kumar <br/><br/>
Encyclopedia of the World Scientists ; Vol. 3 (D to E) 
Nagendra Kumar Singh 
 - New Delhi  APH Publishing Corporation  2004 
 - xv, 962p. 
<br/><br/><label>ISBN: </label>8176485608 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientists encyclopaedia
<br/><br/><label>Dewey Class. No.: </label>509.203 SIN