EPA – U.S. Environmental Protection Agency. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990 – 2007. Washington, April, 2009.
- Post publicado:27/04/2009
EPA – U.S. Environmental Protection Agency. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990 – 2007. Washington, April, 2009.