Plane trigonometry - Nelson, Alfred L. (Lewis), 1891-; Folley, Karl W. (Wilmot), 1905- (New York : Harper, 1956)
The first two editions of this book were published under the title of Plane and spherical trigonometry
Bound with [Lennes, N. J.] comp. Mathematical tables. New York [1943]
Keywords: Plane trigonometry; Trigonometry; Mathematics