TY  - BOOK
AU  - Robison, J. Vincent
TI  - Modern algebra and trigonometry. (2nd ed.)
SN  - 007053330X
AV  - QA 154.2 Rob 
PY  - 1973///
CY  - New York
PB  - McGraw-Hill
KW  - PLANE TRIGONOMETRY
ER  -