Drooyan,Irving <br/><br/>
Essentials of Trigonometry 

 - New York:  Macmillan Publishing,Co.  1977. 
 - viii,328p.;  22cm 
<br/><br/><label>ISBN: </label>0023302208 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / DRO