Crowder, Norman A. <br/><br/>
Trigonometry :  a practical course / 
Norman A.Crowder and Grace C.Martin. 
 - Garden City :  Doubleday,  c 1961. 
 - ix, 250 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>338  338 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>516.24 / C953t