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	1.	Informe anual 2003 by Ecopetrol Language: ES Publication details: Bogotá : Ecopetrol, 2003 Availability: Items available for loan: Biblioteca Central (1)Call number: 1257. Place hold Add to cart (remove)
	2.	Informe empresarial : 2005 by Empresa de Energía del Pacífico [Upme] Language: ES Publication details: Bogotà (Colombia) : Unión Fenosa, 2006 Availability: Items available for loan: Biblioteca Central (1)Call number: 1281. Place hold Add to cart (remove)
	3.	Informe de operación del sistema y administración del mercado eléctrico colombiano 2008 by Compañía de Expertos en Mercados XM Language: ES Publication details: Medellín (Colombia) : La Compañía, 2009 Availability: Items available for loan: Biblioteca Central (1)Call number: 0092. Place hold Add to cart (remove)
	4.	Informe anual 2000 by Empresa Colombiana de Petróleos [Ecopetrol] Language: ES Publication details: Bogotá (Colombia) : Panamericana, 2001 Availability: Items available for loan: Biblioteca Central (1)Call number: 0095. Place hold Add to cart (remove)
	5.	Informe anual 2004 by Empresa Colombiana de Petróleos [Ecopetrol] Language: ES Publication details: Bogotá (Colombia) : Panamericana, 2004 Availability: Items available for loan: Biblioteca Central (1)Call number: 0096. Place hold Add to cart (remove)
	6.	Informe de gestión 2011 by Unidad de Planeación Minero Energética Language: ES Publication details: Bogotá (Colombia) : Upme, 2011 Availability: Items available for loan: Biblioteca Central (1)Call number: UPME 0046. Place hold Add to cart (remove)
	7.	Informe de Operación 2002 by Interconexión Eléctrica S.A Publication details: Medellín : Isa, 2003 Availability: Items available for loan: Biblioteca Central (1)Call number: 0019. Place hold Add to cart (remove)
	8.	Codensa 10 años by Codensa Publication details: Bogotá (Colombia) : La Imprenta Editores S:A., 2007 Availability: Items available for loan: Biblioteca Central (1)Call number: 0145. Place hold Add to cart (remove)
	9.	La leyes generales del ambiente y los códigos de mineria de los paises andinos. Ibstrumentos de gestión ambiental y minero ambiental by Moreno Morales, Catalina Chaparro Avila, Eduardo Series: Recursos Naturales e infraestructura ; 136 Publication details: Santiago de Chile : Cepal, 2009 Availability: Items available for loan: Biblioteca Central (1)Call number: 0163. Place hold Add to cart (remove)
	10.	Informe del sector gas natural 2009 : lecciones aprendidas, retos y perspectiva by Promigas Publication details: Baranquilla : Promigas, 2010 Availability: Items available for loan: Biblioteca Central (1)Call number: 0171. Place hold Add to cart (remove)
	11.	Gestión ambiental by Empresa Colombiana de Petróleo. Ecopetrol Publication details: Bogotá (Colombia) : Ecopetrol, 2010 Availability: Items available for loan: Biblioteca Central (1)Call number: 0172. Place hold Add to cart (remove)
	12.	Memoria y balance: ejercicio 95/96 by Cooperativa de Electricidad Bariloche Ltda Publication details: Bariloche (Argentina) : La Cooperativa Availability: Items available for loan: Biblioteca Central (1)Call number: 0363. Place hold Add to cart (remove)
	13.	Balance social e informe financiero 1990-1991 by Empresa de Energía de Bogotá Publication details: Santafé de Bogotá : La Empresa, 1991 Availability: Items available for loan: Biblioteca Central (1)Call number: 0372. Place hold Add to cart (remove)
	14.	Annual report 1994: a well-known silver producer with a growing gold profile. by Hecla Mining Company Publication details: México : La Compañía, 1994 Availability: Items available for loan: Biblioteca Central (1)Call number: 0373. Place hold Add to cart (remove)
	15.	Informe de Desarrollo Humano para Colombia 1999 by Departamento Nacional de Planeación, DNP Language: ES Publication details: Bogotá : DNP, 1999 Availability: Items available for loan: Biblioteca Central (1)Call number: 880. Place hold Add to cart (remove)
	16.	Informe de gestión 2012 by Unidad de Planeación Minero Energética Language: es Publication details: Bogotá (Colombia) : UPME, 2012 Availability: Items available for loan: Biblioteca Central (1)Call number: UPME 0489. Place hold Add to cart (remove)
	17.	El conocimiento de la tierra com un sistema integral: informe anual 1994 by Instituto de Investigaciones en Geociencias, Minería y Química [Ingeominas] Language: ES Publication details: Bogotá : Ingeominas, 1994 Availability: Items available for loan: Biblioteca Central (1)Call number: 0941. Place hold Add to cart (remove)
	18.	Informe de estado de deuda vencida, empresas del sector eléctrico by Interconexión Eléctrica [ISA] Language: ES Publication details: Medellín : ISA, 1998 Availability: Items available for loan: Biblioteca Central (1)Call number: 01092. Place hold Add to cart (remove)