Differential Equations Computing - Hardcover, by Edwards C. Henry; - Acceptable

Differential Equations Computing and Modeling (4th Edition) - Hardcover - GOOD

Differential Equations Computing and Modeling (4th Edition)

Differential Equations Computing and Modeling + STUDENT SOLUTIONS MANUAL

Differential Equations Computing and Modeling (4th Edition)

Differential Equations Computing and Modeling 4th Edition, Edwards, Penney [VG]

Elementary Differential Equations, Penney, David E.

Differential Equations and Linear A..., Penney, David E