VDI 4251 Blatt 1-2004 Measurement of airborne microorganisms and viruses in ambient air - Planning of plant-related measurements - Plume measurement of ambient air
Erfassen luftgetragener Mikroorganismen und Viren in der Aussenluft - Planung von anlagenbezogenen Messungen - Immissionsbestimmung durch Fahnenmessungen
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