Brahma Nand; Tyagi, B S <br/><br/>
Trigonometry 

 - 3 
 -  Kedar Nath Ram Nath Publishers, Meerut  1963 
 - 326 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry; Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  BRA-T3