Kells, Lyman M.  1888- <br/><br/>
Plane and spherical trigonometry / 
[by] Lyman M. Kells, Willis F. Kern [and] and James R. Bland.- 
 - Third edition.- 
 - New York,  McGraw-Hill,  1951. 
 - 290 pages :  illustrations ;  24 cm 
<br/><br/>Bound with the authors' Five-place logarithmic and trigonometric tables. New York, 1935. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.<br/>Spherical trigonometry.
<br/><br/><label>LC Class. No.: </label>QA531  / .K38 1951