| Item Description: | "Contributions from: American Iron and Steel Institute; California Department of Transportation; California Division of Mines and Geology; California Institute of Technology; Centro de Investigación Cientifica y Educación Superior de Ensenada, Baja California;, H. J. Degenkolb and Associates, Consulting Structural Engineers, Imperial College, London; J. D. Raggett and Associates, Inc., Structural Engineers; Scripps Institution of Oceanography; U.S. Department of the Interior, Geological Survey; and Universidad Nacional Autó́noma de México." |