Conference addresses (opening and closing ceremonies) : International Conference on Tropical and Ozone Atmospheric Change, 20-23 February 1990, Penang, Malaysia - International Conference on Tropical and Ozone Atmospheric Change (1990 : Pulau Pinang); Universiti Sains Malaysia; United Nations Environment Programme (Pulau Pinang : Universiti Sains Malaysia, 1990)
Keywords: Atmospheric ozone -- Environmental aspects -- Congresses; Air quality management -- Government policy -- Congresses