fix articles 476486, flight attendant medical research institute distinguished professor award
Los Angeles Indymedia : tag : flight attendant medical research institute distinguished professor award
flight attendant medical research institute distinguished professor award
Ventilation no help against second hand smoke (tags)
Toronto pub's ventilation system exchanged the air 10 times an hour, but to reduce the second-hand smoke dangers to acceptable levels would require at least 34,000 air changes per hour.
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