Reauthorization of National Earthquake Hazards Reduction Act : hearing before the Subcommittee on Science, Technology, and Space of the Committee on Commerce, Science, and Transportation, United States Senate, one hundredth Congress, first session on ... April 23, 1987.
United States.Congress.Senate.Committee on Commerce, Science, and Transportation.Subcommittee on Science, Technology, and Space.
Washington : USGPO,
1987.
Seismological research