Pingnani, Tullio J. <br/><br/>
Elements of trigonometry  
Tullio J. Pignani 
 - New York :  Brace and works,  1968. 
 - xv, 284p. :  ills. ;  26 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.<br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>651.24  / PIE 1968