PN Z04211-02-1989 Air purity protection Tests for 1,1,1-trichloroethane, freon 11 and white spirit in mixtures Determination of 1,1,1-trichloroethane, freon 11 and- white spirit in work places by gas chromatography
1989PN Z04211-02-1989 Air purity protection Tests for 1,1,1-trichloroethane, freon 11 and white spirit in mixtures Determination of 1,1,1-trichloroethane, freon 11 and- white spirit in work places by gas chromatography