VDI 3957 Blatt 10-2002 Biological measuring techniques for the determination and evaluation of effects of air pollutants on plants (bioindication) - Source-related measurements of ambient air quality using bioindicators
2004VDI 3957 Blatt 10-2004 Biological measuring techniques for the determination and evaluation of effects of air pollutants on plants (bioindication) - Source-related measurements of ambient air quality using bioindicators
2002VDI 3957 Blatt 10-2002 Biological measuring techniques for the determination and evaluation of effects of air pollutants on plants (bioindication) - Source-related measurements of ambient air quality using bioindicators