TY  - BOOK
AU  - Das, B.C. 
AU  - Mukherjee, B.N. 
TI  - Higher trigonometry
SN  - 9789380673837
U1  - 516.24 
PY  - 2017///
CY  - Kolkata
PB  - U.N. Dhur and Sons
KW  - Geometry Trigonometry
ER  -