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2. 2. U.S. Dept. of Labor , Occupational Safety & Health Administration, 29 CFR Parts 1910, 1915, 1926, and 1928 Indoor air quality, proposed rule Fed Reg 59 #65, Tues. (1994 ), pp.15968 -16039 .
3. An Enforceable Indoor Air Quality Standard for Environmental Tobacco Smoke in the Workplace1
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5. Assessing Exposures to Environmental Tobacco Smoke