TY  - BOOK
AU  - Zill,Dennis G.
TI  - A first course differential equations with modeling applications / 
SN  - 0534955746   
PY  - 1997///.
CY  - Pacific Grove, California
PB  - Brooks/Cole Publishing, 
KW  - Differential equations
N1  - Includes index; Includes questions and answers
ER  -