TY  - BOOK
AU  - Das, B. C.
AU  - Mukherjee, B. N.
TI  - Intermediate trigonometry
U1  - 516.24 
PY  - 1950///
CY  - Calcutta
PB  - U. N. Dhur and Sons
KW  - Mathematics
N1  - Includes index
ER  -