TY  - BOOK
AU  - B. C. DAS
TI  - DIFFERENTIAL CALCULAS
U1  - 515.33/DAS/DIF 
PY  - 1949///
CY  - KOLKATA
PB  - U. N. DHUR AND SONS PRIVATE LIMITED
KW  - DIFFERENTIAL CALCULUS
KW  - MATHEMATICS
ER  -