TY  - BOOK
AU  - Das,B.C
AU  - Mukherjee,B.N
TI  - Higher Trigonmetry: B.C.Das,B.N.Mukherjee
U1  - 514 
CY  - Calcutta
PB  - U.N.Dhur & sons
KW  - Mathematics
KW  - Trigonmetry
KW  - গণিত
ER  -