Crowdis, David G. <br/><br/>
Trigonometry :  a functional approach / 
David G. Crowdis and Brandon W. Wheeler. 
 - New York :  McGraw-Hill,  [1971] 
 - viii, 320 p. :  ill. 
<br/><br/><label>ISBN: </label>0070147108 
<br/><br/><label>LCCN: </label>93044294     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.