Report of the Sixth Meeting of the ASEAN Experts Group on the Environment, Yogyakarta, Indonesia, 22-23 March 1983 - ASEAN Experts Group on the Environment. Meeting 1983 : Yogyakarta, Indonesia) ([S.l : s.n], 1983)
Keywords: Environmental policy -- Asia, Southeastern -- Congresses; Environmental protection -- Asia, Southeastern -- Congresses