Societal value of geologic maps /
- Denver, US : U.S. Geological Survey, 1993.
- 52 p.
Geological mapping.
Nacional Geologic Mapping Program (U.S.)
Bernknopf, Richard.
550.22 SOC.
Geological mapping.
Nacional Geologic Mapping Program (U.S.)
Bernknopf, Richard.
550.22 SOC.