Applied Differential Equations by Spiegel 2nd Ed 1967 OLD VINTAGE MATH BOOK

Ordinary Differential Equations Hardcover, by Wilfred Kaplan, 1967 5th Printing

mathematics ordinary differential equations book, by wilfred kaplan, 1962 4th Pr

Elementary Differential Equations 3rd Edition, Earl D. Rainville, 1964

Applied Differential Equations : Second Edition - Murray R. Spiegel - 1967 HC

An Introduction to Ordinary Differential Equations

Elementary Differential Equations by William E. Boyce & Richard DiPrima 1969 HC

Theory and Solution of Ordinary Differential Equations - Greenspan - HC 1960