TY  - BOOK
AU  - Das, B.C. .
AU  - Mukherjee, B.N..
TI  - Intermediate Trigonometry
U1  - 514 
PY  - 1968///
CY  - Calcutta
PB  - U. N. Dhur & Sons Pvt. Ltd.
KW  - Trigonometry
KW  - G-Mathematics
ER  -