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Energy in Europe : energy policies and trends in the European Community
Luxembourg : [Verlag nicht ermittelbar] - Nr. 16.1990 - 28.1997; damit Ersch. eingest.
Persistent link: https://www.econbiz.de/10000371449
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Memoria al Congreso
Kolumbien / Ministerio de Minas y Energía - Bogotà - 1974; 1982/83 - 1997/98(1998)[?]; 2001/02(2002)[?]
Persistent link: https://www.econbiz.de/10000461659
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Memorias al Congreso Nacional
Kolumbien / Ministerio de Minas y Energía - Bogotà, Col. - 1990/1991 [?]-
Persistent link: https://www.econbiz.de/10003543231
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Memorias al Congreso de la República / Ministerio de Minas y Energía, República de Colombia
Kolumbien / Ministerio de Minas y Energía - Bogotá - Nachgewiesen 2000/01 -
Persistent link: https://www.econbiz.de/10002424719