RT null T1 Status of National Samples at Örebro University – Asia-Pacific region A2 Fiedler, Heidelore K1 persistent organic pollutant K1 sampling YR 2018 FD 2018 LK https://wedocs.unep.org/handle/20.500.11822/26174 UL https://wedocs.unep.org/handle/20.500.11822/26174 DS UN Environment Document Repository RD Sep 19, 2026