Guide to U.S. Government maps : geologic and hydrologic maps : updated through December 1977 /
Geological Survey (U.S.)
Andriot, Laurie.
McLean, Va. Documents Index
1978
Includes indexes
"Entries and annotations were taken from the cumulative volumes of Publications of the Geological Survey, 1879-1961 and 1962-1970, the annual supplements for 1971 through 1976, and the monthly lists of New publications of the Geological Survey from January 1962 through December 1977."
Geological Survey (U.S.)
Geology
Hydrology