Geological Survey (U.S.) & Hays, W. W. (1981). Facing geologic and hydrologic hazards: Earth-science considerations. U.S. Dept. of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and Walter W. Hays. Facing Geologic and Hydrologic Hazards: Earth-science Considerations. [Washington, D.C.?]: U.S. Dept. of the Interior, Geological Survey, 1981.
MLA (9th ed.) CitationGeological Survey (U.S.) and Walter W. Hays. Facing Geologic and Hydrologic Hazards: Earth-science Considerations. U.S. Dept. of the Interior, Geological Survey, 1981.
Warning: These citations may not always be 100% accurate.