The structure of crystals : by Ralph W. G. Wycoff ... Wyckoff, Ralph W. G. (Ralph Walter Graystone), 1897-1994. Crystallography. QD921 .W8 1931 548.81 WYS Includes bibliographical references and index. New York : The Chemical Catalog Company. inc., 1935. 1935. 1931 Text 497 p. : eng American Chemical Society. Monograph series. [no. 19] Monograph series (American Chemical Society) ; no. 19.