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1by Ruthberg, Zella G.“...U.S. Dept. of Commerce, National Bureau of Standards :...”
Published 1984
Government Document Book -
2by Ruthberg, Zella G.“...U.S. Dept. of Commerce, National Bureau of Standards ;...”
Published 1986
Government Document Book -
3Published 1988“...U.S. Dept. of Commerce, National Bureau of Standards,...”
Government Document Book -
4Published 1985“...U.S. Dept. of Commerce, National Bureau of Standards :...”
Government Document Microform Book