Hall, H S; Knight, S R <br/><br/>
Elementary trigonometry 

 - 4 
 -  Macmillan & Co. Ltd., London  1906 
 - 415 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry; Mathematics
<br/><br/><label>Dewey Class. No.: </label>516.24  HAL-E4