01317oam 2200373 450 991070368650332120150415123242.0(CKB)5470000002432843(OCoLC)904719779(EXLCZ)99547000000243284320150311d1999 ua 0engurbn|||||||||rdacontentrdamediardacarrierOn the modified Mercalli intensities and magnitudes of the 1811/1812 New Madrid, central United States, earthquakes /by Susan Hough [and three others][Reston, Va.?] :Department of the Interior, U.S. Geological Survey,1999.1 online resource (46 pages) illustrationsOpen-file report ;99-565Title from title screen (viewed Mar. 5, 2015).Includes bibliographical references (pages 18-20).EarthquakesNew Madrid Seismic ZoneNew Madrid Seismic ZoneEarthquakesHough Susan Elizabeth1961-770727Geological Survey (U.S.),GPOGPOGPOBOOK9910703686503321On the modified Mercalli intensities and magnitudes of the 18113474967UNINA