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Clearing the air

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1001 ‎$0‎MAPA20080109790‎$a‎Naso, Markisan
24510‎$a‎Clearing the air‎$c‎By Markisan Naso
5208 ‎$a‎OSHA established permissible exposure limits, or PELs, for nearly 500 air contaminants, based on research conducted in the 1950s and 1960s.
65011‎$0‎MAPA20080570507‎$a‎Riesgo químico
65011‎$0‎MAPA20080580919‎$a‎Industria química
65011‎$0‎MAPA20080619480‎$a‎Enfermedades profesionales
65011‎$0‎MAPA20080605247‎$a‎Contaminación del aire
65011‎$0‎MAPA20080585679‎$a‎Higiene industrial
65001‎$0‎MAPA20080605278‎$a‎Contaminantes químicos
65011‎$0‎MAPA20080560973‎$a‎Valores TLV
65011‎$0‎MAPA20080568863‎$a‎Estados Unidos
7400 ‎$a‎Safety & health
7730 ‎$t‎Safety & health‎$d‎Itasca‎$g‎Vol. 167, nº 4, April 2003 ; p. 32-36