TY  - BOOK
AU  - Nelson,Alfred L.
AU  - Folley,Karl W.
TI  - Plane trigonometry
U1  -  514.5 
PY  - 1956///
CY  - New York
PB  - Harper
KW  - Plane trigonometry
N1  - "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]
ER  -