by Massachusetts Institute of Technology. Department of Civil Engineering
United States. Army. Corps of Engineers.
N. M. Newmark
National Research Council (US)
American Society of Civil Engineers. Engineering Mechanics Division. Committee on Structural Dynamics
Symposium on Earthquake and Blast Effects on Structures (1952 Los Angles)
American Society of Civil Engineers. Engineering Mechanics Division. Committee on Structural Dynamics.
United States. Federal Civil Defense Administration.
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