TY  - BOOK
AU  - RAMAPRASAD DAS
TI  - NABYA JUKTI BIGYAN
U1  - 511.3/DAS/NAB/V-1 C 
PY  - 1977///
CY  - KOLKATA
PB  - MORDERN BOOK AGENCY
KW  - MATHEMATICS
KW  - PRINCIPLES OF MATHEMATICS
ER  -