Subregional Awareness Raising Workshop on Persistent Organic Pollutants (POPs) Cartagena (Colombia) January 27-30, 1998 creator United Nations Environment Programme, UNEP text ck Cartagena UNEP IOMC 1998 monographic eng 318 p. 29 x 21 cm general Polución Medio ambiente Canada 628.168 P96p CO-BoIAVH 140312 20191224041720.0