United States earthquakes, 1968 /
by Jerry L. Coffman and William K. Cloud ; prepared in cooperation with National Oceanic and Atmospheric Administration.
APA Citation
Coffman, J. L., Cloud, W. K., United States. National Oceanic and Atmospheric Administration. (1984). United States earthquakes, 1968. [Reston, VA]: U.S. Geological Survey.
MLA Citation
Coffman, Jerry L, William K Cloud, and United States. National Oceanic and Atmospheric Administration. United States Earthquakes, 1968. [Reston, VA]: U.S. Geological Survey, 1984.
Warning: These citations may not always be complete (especially for serials).