Subba Reddy D V Ed <br/><br/>
Journal of the Andhra Pradesh Akademi of Sciences Special Number Vol 6 1971 

 -  A P Akademi of Sci, Hyderabad 
 - pp 121;   25*17 
<br/><br/><label>Dewey Class. No.: </label>E:2m4418N66/N71.6/B08084