Wentworth, George, 1868 <br/><br/>
Plane and spherical trigonometry and tables / 
by George Wentworth and David Eugene Smith 
 - Boston :  Ginn and Company,  1914. 
 - v, 232, 28, iv p., 1 l., 104 p. :   ill., diagrs. ;  24 cm. 
<br/><br/> Transparent protractor in pocket mounted on lining-paper.  With answers.  Tables have special t.-p.: Trigonometric and logarithmic tables, by George Wentworth and David Eugene Smith. Boston, New York etc. Ginn and company c1914 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Trigonometry