Ordinary differential equations / a first course Fred Brauer and John A. Nohel. Brauer, Fred. Nohel, John A., author. Differential equations. QA372 .B8 517.38 BRO Bibliography: p. 429-430. New York, W. A. Benjamin, 1967. 1967. 1967 Text xvi, 457 p. eng University mathematics series University mathematics series.