Description
Item Description: | "Supported by the U.S. Geological Survey, Department of the Interior, under assistance Award No. 01HQAG0193--T.p. verso |
Physical Description: | 1 online resource (ix, 23 pages) : illustrations |
Bibliography: | Includes bibliographical references (page 13). |
ISBN: | 0309566207 9780309566209 |
Source of Description, Etc. Note: | Print version record. |