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Communications and tracking expert systems study

Leibfried, T. F. (Theodore Frederick), 1925-
[Houston, Tex.] : Research Institute for Computing and Information Systems, University of Houston--Clear Lake : [Springfield, Va. : For sale by the National Technical Information Service, 1987] 1987

NASA risk management handbook

United States. National Aeronautics and Space Administration.
Washington, D.C. : National Aeronautics and Space Administration, NASA Headquarters, [2011] 2011