Smith, Robert W. 1952- The expanding universe : astronomy's "Great Debate," 1900-1931 / Robert W. Smith. - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1982. - xiv, 220 p. : ill. ; 23 cm. Bibliography: p. 202-215. and index. ISBN: 0521232120 (U.S.) Subjects--Topical Terms: Expanding universe. Dewey Class. No.: 523.18 / SME 1982