Drooyan, Irving <br/><br/>
Trigonometry  an analytic approach 

 - London  Macmillan  1967 
 - 358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Triqonometry
<br/><br/><label>Dewey Class. No.: </label>514.5  / D83T