Durell, C.V.  Robson, A. <br/><br/>
Advanced trigonometry  x 

 - x 
 - London  G. Bell and sons  1937 
 - viii, 335 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry Trigonometry 
<br/><br/><label>Dewey Class. No.: </label>514/DUA