Differential Equations with Bo - Hardcover - VERY GOOD

Differential Equations with Boundary-Value Problems by Dennis G. Zill

Elementary Differential Equations and Boundary Value Problems - Hardcover - GOOD

Elementary Differential Equations and Boundary Value Problems, Boyce, William E.

Differential Equations with Boundary-Value Problems Hardcover

Elementary Differential Equations and Boundary Value Problems - Hardcover - GOOD

Diff Equ W/Boundary Value Problems 4ed by Zill, Dennis G.; Cullen, Michael R.