00469pamaa2200157 4500 0000033508 20090916090000.0 0534379990 515.35 ZIL 2000 QA372 ZIL 2000 Zill A First course in differential equations with modeling applications Dennis G. Zill. 7th ed. Pacific Grove: Brooks/Cole Pub., 2000. xiii, 438p.: col.ill.; 26cm. Differential equations