TY  - BOOK
AU  - RIETZ,H.L.
AU  - 
TI  - Plane and Spherical Trigonometry. 
U1  - 514.6/RIP 
PY  - 0000///Macmillan.
PY  - 1950///
CY  - New York. 
KW  - Trigonometry.
KW  - Trigonometry
N1  - Includes index and bibliography.
ER  -