Maximum allowable concentrations (MAC) of microorganism-producers, bacterial products and their components in the atmospheric air of inhabited places. Amendment No. 2 to GN 2.1.6.711-98
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"