TY  - BOOK
AU  - Das,B.N.
AU  - Mukherjee,B.N.
TI  - Intermediate Trigonometry 
SN  - 8185624852
U1  - 516.24 
PY  - 1933///
CY  - Kolkata 
PB  - U.N.Dhur & Sons Private Limited 
KW  - Mathematics
ER  -