Guide to obtaining USGS information /
Dodd, Kurt.
Fuller, H. Kit.
Clarke, Paul F.
[Reston, Va?] Dept. of the Interior, U.S. Geological Survey Alexandria, VA Eastern Distribution Branch, Text Products Section, USGS
[1985?]
"This circular supercedes Circular 777."
Item 620-A
United States. Geological Survey.
Geology
Hydrology