TY  - BOOK
AU  - Hart, William L.
TI  - Plane and spherical trigonometry with applications
SN  - 971-08-1916-x.
U1  - Circ. 516.24 H325p 1964 
PY  - 1964///
CY  - Boston: 
PB  - D.C. Heath and Company.
KW  - 1. Trigonometry
N1  - Includes index
ER  -