Elementary mathematics for class vii: 
edited by N. Rama Rao and translated by N. Basava Raju 
 - ii :  A. P. text book press ,  1967 
 - 192 p. :  22 cm. 
<br/><br/><label>ISBN: </label> Rs.2.70 
<br/><br/><label>Dewey Class. No.: </label>510.7