This is a textbook on Ordinary Differential Equations by Wilfred Kaplan, published by Addison-Wesley Longman, Incorporated in 1961. The book is a hardcover with dimensions of 6 x 9 inches and a weight of 35 ounces. The book contains 534 pages and is written in the English language. It covers the subject area of calculus and specifically focuses on ordinary differential equations. The author of the book is Wilfred Kaplan. This book is categorized as a textbook and falls under the categories of Textbooks, Education & Reference, and Books & Magazines.