- ∗I gratefully acknowledge the personnel at Badlands National Park without whose continued cooperation this work would not be possible. I also extend sincere thanks to Dr. Anthony Young, University of East Anglia, who provided a copy of the computer program for his Best Units Analysis. Professor William L. Graf, Department of Geography, Arizona State University, offered helpful suggestions for improvement of the manuscript. I am also indebted to Professor Neil E. Salisbury, Department of Geography, University of Oklahoma, with whom many of the problems and ideas presented here were first discussed.
Annals of the Association of American Geographers
Volume 71, 1981 - Issue 3