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  1. 1
    National survey results on drug use from the Monitoring the Future study, 1975-1995
    by Johnston, Lloyd
    Published 1996
    Government Document Book
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  2. 2
    National survey results on drug use from the Monitoring the Future study, 1975-1994
    by Johnston, Lloyd
    Published 1995
    Government Document Book
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  3. 3
    National survey results on drug use from the Monitoring the Future study, 1975-1992
    by Johnston, Lloyd
    Published 1993
    Government Document Book
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  4. 4
    Drug use among American high school seniors, college students, and young adults, 1975-1990
    by Johnston, Lloyd
    Published 1991
    Government Document Book
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  5. 5
    Smoking, drinking, and illicit drug use among American secondary school students, college students, and young adults, 1975-1991
    by Johnston, Lloyd
    Published 1992
    Government Document Book
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