Smith, David Eugene, et al. <br/><br/>
Essentials of trigonometry 

 -  Ginn & Co., Boston  1928 
 - 250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry; Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  SMI-E