Maximum allowable concentrations (MAC) of harmful substances in occupational air. Amendment No. 4 to hygienic normatives "Maximum allowable concentrations (MAC) of harmful substances in occupational air: GN 2.2.5.686-98"
Maximum allowable level (MAL) of pollution with O-isobutyl-beta-n-diethylaminoethylthiol ester of methyl-phosphonic acid (substance of type Vx) of the metal waste surfaces that have passed thermal processing