TY  - BOOK
AU  - INDRAKUMAR ROY
TI  - PRATIKI NAYAY
U1  - 511.3/ROY/PRA 
PY  - 1977///
CY  - KOLKATA
PB  - WEST BENGAL STATE BOOK BOARD
KW  - MATHEMATICS
KW  - PRINCIPLES OF MATHEMATICS
ER  -