Massey, William S. Algebraic topology: an introduction / [by] William S. Massey. - New York: Harcourt, Brace & World, [1967] - xix, 261 p. illus. 24 cm. - Graduate Texts in Mathematics. 56 . - Harbrace college mathematics series . Includes bibliographies. ISBN: 0387902716 3540902716 LCCN: 67-012496 Subjects--Topical Terms: Algebraic topology.-------- Dewey Class. No.: 514.2