Lipschutz, Seymour Schaum's Outline of Theory and Problems of General Topology / by Seymour Lipschutz. - New York : Mc Graw-Hill, 1965. - 239 p. : il. Includes 650 solved problems. - Index: p. 235. Subjects--Topical Terms: MATEMÁTICASTOPOLOGÍAACTIVIDADES DE APRENDIZAJE