Assessment of long-range transboundary air pollution report prepared within the framework of the Convention on Long-range Transboundary Air Pollution Economic Commission for Europe - New York United Nations 1991 - vi, 94p. ill. 30cm Includes bibliographical references ISBN: 9211165059 (pbk.): free Subjects--Topical Terms: Air--Pollution--Environmental aspectsTransboundary pollution--Environmental aspects