TY  - BOOK
AU  - Boyce, William E.
AU  - DiPrima, Richard C.
TI  - Elementary differential equations and boundary value problems, William E.Boyce, eng
SN  - 0471089559
U1  - 515.35, 
PY  - 1997///
CY  - New York, John Wiley, US
ER  -