This is for one lot of 2 books on differential equations:
Elementary Differential Equations, 4th edition by Earl D. Rainville et al, 1972, Macmillan
Elementary Differential Equations and Boundary Value Problems, 2nd edition, 1969, Wiley
Please see photos for more on contents and condition.
Elementary Differential Equations book is ex-lib with library labels and shelf wear. Boundary Value book has a name and other writing on endpapers. Both have clean interior pages.