TY  - BOOK
AU  - Rider, Paul R.
AU  - 
TI  - Plane and spherical trigonometry
SN  - 971-08-1918-6
U1  - 516.24 R544 1971 
CY  - New York
PB  - Macmillan Company.
KW  - Plane Trigonometry
KW  - Trigonometry
KW  - Spherical Trigonometry
ER  -