TY  - BOOK
AU  - Boyce, willam E.
AU  - Diprima, Richard C.
TI  - ELemetatry Differential Equations
SN  - 0471319988
U1  - 515.35 BOY 
PY  - 2001///
CY  - New York
PB  - John Willey & Sons, Inc
KW  - Differential equations
KW  - BOundary value Problems
ER  -