TY  - BOOK
AU  - Asin, Ricardo C.
TI  - Elementary differential equations reviewer.
SN  - 9713007409
U1  - Fil. 515.35 A832e 1991 
PY  - 1991///
CY  - Manila, Philippines
PB  - Merriam & Webster Book Store Inc.
KW  - 1. Differential questions
ER  -