DAVIS, Thomas A. <br/><br/>
Trigonometry: algebra and tigonometry in four programmed volumes 
/[by] Thomas A.Davis 
 - New York  Harcourt brace jovanovich  1972 
 - viii, 392 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>155021532 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24  / DAV