Part W, Miscellanea, Supplement 2, Ch. 1, p. 1-67 Authors David L. Clark University of Wisconsin Klaus J. Miller Rheinische Friedrich Wilhelms Universitat Willi Ziegler Forschungsinstitut Senchkenberg, Frankfurt and Philipps Universitat Walter C. Sweet Ohio State University Anita G. Harris U.S. Geological Survey Maurits Lindstrom Philipps Universitat Downloads PDF Published 1981-01-01 — Updated on 2018-01-01 Issue Part W, Miscellanea, Supplement 2 (1981) Section Chapters License https://creativecommons.org/licenses/by/4.0/