Birkhoff, Garrett, 1911-1996. Ordinary differential equations / Garrett Birkhoff, Gian-Carlo R ota. - Boston : Ginn, c1962. - 318 p. : ill. ; 24 cm. - Introductions to higher mathematics . Includes bibliographical references (p.311-312) and index. LCCN: 61-015025 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 515.35