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Assessment of the usefulness and availability of NASA's earth and space science mission data

Washington, D.C. : National Academy Press, c2002. 2002

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