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  • Nelson, R. E.
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    Guide to Voice Scramblers for Law Enforcement Agencies.
    National Bureau of Standards, Gaithersburg, MD
    NBS SP 480-8
    Department of Justice, Washington, DC, NBS SP 480-8
    December 1976
    44 p.

  • Lerner, N. D.; Collins, B. L.
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    Assessment of Safety Symbol Understandability by Different Testing Methods.
    National Bureau of Standards, Washington, DC
    NBSIR 80-2088
    NBSIR 80-2088
    August 1980
    60 p.

  • Collins, B. L.; Pierman, B. C.
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    Evaluation of Safety Symbols.
    National Bureau of Standards, Gaithersburg, MD
    NBSIR 79-1760
    NBSIR 79-1760
    June 1979
    37 p.

  • Margulis, S. T.
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    Privacy as Information Management: A Social-Psychological and Environmental Framework.
    National Bureau of Standards, Washington, DC
    NBSIR 79-1793
    NBSIR 79-1793
    September 1979
    27 p.