RT null T1 Guidelines for the identification of PCBs and materials containing PCBs A1 United Nations Environment Programme, K1 chemical PB United Nations Environment Programme SN Not Available YR 1999 FD 1999 LK https://wedocs.unep.org/handle/20.500.11822/8221 UL https://wedocs.unep.org/handle/20.500.11822/8221 NO This document is about Identification of PCBs and Materials Containing PCBs. DS UN Environment Document Repository RD Nov 4, 2026