TY  - BOOK
AU  - Das, B.C. .
AU  - Mukherjee, B.N..
TI  - Higher Trigonometry
U1  - 516.34 
PY  - 1984///
CY  - Calcutta
PB  - U. N. Dhur & Sons Pvt. Ltd.
KW  - Trigonometry
KW  - G-Mathematics
ER  -