VDI 4251 Blatt 1 Berichtigung-2007 Measurement of airborne microorganisms and viruses in ambient air - Planning of plant-related ambient air measurements - Plume measurement; Corrigendum concerning guideline VDI 4251 Part 1:2007-02
2007VDI 4251 Blatt 1 Berichtigung-2007 Measurement of airborne microorganisms and viruses in ambient air - Planning of plant-related ambient air measurements - Plume measurement; Corrigendum concerning guideline VDI 4251 Part 1:2007-02