Resources for the twenty-first century-proceedings of the International Centennial Symposium of the United States Geological Survey, Reston, Virginia, October 14- 19, 1979.  by F.C. Whitmore and M.E. Williams, editors.
Contributors: Whitmore, F.C.; Williams, M.E.
Publisher: U.S.  Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 345
Subjects: Natural resources
Notes: 11