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