Energy systems, environment and development : a reader - UN NY United Nations New York 1991 - 496p. - Energy technology Assessment - Advanced Technology Assessment System, Issue 6 . Nat. Bib. No.: P 893 Nat. Bib. Agency Control No.: 620.91:577.5ENE Subjects--Topical Terms: EnergyEnvironment Universal Decimal Class. No.: 620.91:577.4