TY  - BOOK
AU  - Das,B.C.,
AU  - Mukherjee,B.N.,
TI  - Intermediate trigonometry
SN  - 81-85624-85-2
U1  - 516.24 
PY  - 1999///
CY  - Calcutta
PB  - U.N. Dhur & sons private limited
KW  - Geometry
KW  - Trigonometry
ER  -