- We acknowledge the help of Peter Gould, The Pennsylvania State University, in the preparation of this paper, and the drafting of Jeanne Warrington, Michael Tidball, Ester DelRosso, and the staff of the George Deasy Cartography Laboratory at Penn State University, for preparing the maps and diagrams for publication. Mary Goldenbaum, Klaus Waibel and Sam DePriest provided data management and programming support. James Damato and Sally Fuller assured the quality of laboratory testing procedures. Michael Zdeb helped in solving some of the early conceptual problems. The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense.
Annals of the Association of American Geographers
Volume 79, 1989 - Issue 1