TY  - BOOK
AU  - Rider, Paul R.
TI  - Plane and Spherical Trigonometry
SN  - 9710819186
U1  - FIL 516.24 R24p 1971 
PY  - 1971///
CY  - Philippines : 
PB  - The Macmillan Company, 
KW  - Plane trigonometry
KW  - Spherical Trigonometry
ER  -