Subjects: ELEMENTARY schools -- United States; INTELLECT; REPEATED measures designUNITED States
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Subjects: *Pollutants; *Fluorocarbons; *Gas chromatographyUnited States. Air Force
Subjects: NUTRITION policy; DATA analysis; HEALTHCALIFORNIA
Subjects: ELECTIONS & psychology; UNITED States elections; MEMORYUNITED States
Subjects: ABORTION laws; ABORTION & psychology; ABORTION in the United StatesUNITED States
Subjects: Criticism; News Reporting; TestsNational Assessment of Educational Progress
Subjects: *Water analysis; *Water supply; *Water pollutionNorth CarolinaUnited States. Environmental Protection Agency
Subjects: *LABOR policy; *LABOR bureaus; *STATISTICSUNITED States. Bureau of Labor Statistics
Subjects: DISEASE risk factors; MORTALITY risk factors; STATISTICSUNITED States