Milnor, John Willard 1931- Morse theory / John Willard Milnor ; Based on lecture notes by M. Spivak and R. Wells. - Princeton, N.J. : Princeton University Press, 1963. - 153 p. : ill. ; 24 cm. - Annals of mathematics studies, no. 51 . - 513.8 . Includes bibliography. Subjects--Topical Terms: Homotopy theory.Geometry, Differential. Dewey Class. No.: 513.8