RT null T1 Introduction to the training movie: Passive sampling of ambient air - pre-cleaning of PUF disks T2 Introduction au film de formation: Échantillonnage passif de l’air ambiant – pré-lavage des disques PUF A2 Atanasovska, Katerina YR 2016 FD 2016 LK https://wedocs.unep.org/handle/20.500.11822/30710 UL https://wedocs.unep.org/handle/20.500.11822/30710 DS UN Environment Document Repository RD Sep 16, 2026