The crust of the earth : an introduction to geology / edited by Samuel Rapport and Helen Wright. Rapport, Samuel Berder, 1903- ed. Wright, Helen, 1914- joint ed. Geology. Geophysics. QE31 .R3 551 RAC "A Signet key book." New York : New American Library, 1955. 1955. 1955 Text 224 p. : eng