531.6
Ene
E
Energy systems,environment and development : a reader . / -- New York ; United Nations, 1991.
xviii, 496 p. ; 28 cm. 
A la cabeza de la portada ; " Center for Science and Technology for Development " 
Advanced Techology Assessment  Systes,Issue 6, Autumn 1991,Bulletin
Continua ficha 2.