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Gaithersburg, MD : National Computer Systems Laboratory, National Institute of Standards and Technology ; Springfield, VA : For sale by the National Technical Information Service, 1990.

Gaithersburg, MD : U.S. Dept. of Commerce/National Bureau of Standards ; Springfield, VA : For sale by the National Technical Information Service, 1986.

Gaithersburg, MD : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, Computer Systems Laboratory ; Springfield, VA : For sale by the National Technical Information Service, [1995]