TY - BOOK ED - United Nations TI - Energy statistics yearbook = Annuaire des statistiques de l'energie U1 - R1 PY - 1997/// CY - New York PB - United Nations KW - ENERGIA KW - GAS NATURAL KW - PETROLEO KW - ENERGIA ELECTRICA KW - ECONOMIA KW - ESTADISTICA N1 - 06948 al 06949 N2 - Conversion factors. Commercial energy production, trade and consumption. Solid fuels. Liquid fuels. Gaseous fuels ER -