Lefschetz, Solomon, 1884-1972. Topology/ by Solomon Lefschetz. - 2nd ed. - New York: Chelsea, 1956. - xi, 413 p.: ill.; 22 cm. Includes index. Bibliography: p. 393-407. LCCN: 56011513 Subjects--Topical Terms: Topology. Dewey Class. No.: 514 / L495t