TY  - BOOK
AU  - Das, B. C.
AU  -  Mukherjee, B. N.
TI  - Higher trigonometry
U1  - 514 22
PY  - 1944///
CY  - Calcutta
PB  - U. N. Dhur & Sons Ltd
KW  - statistics
KW  - trigonometry
KW  - higher trigonometry
ER  -