Gelfand, I. M. <br/><br/>
Trigonometry/ 
I.M. Gelfand, Mark Saul. 
 - Boston:  Birkhäuser,  c2001. 
 - x, 229 p.:  ill.;  23 cm. 
<br/><br/><label>ISBN: </label>0817639144 (alk. paper) 3764339144 
<br/><br/><label>LCCN: </label>99032245 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.<br/>Trigonometrie rectiligne.
<br/><br/><label>Dewey Class. No.: </label>516.1  / G316t