作者:Humphries, Marc
发布日期:2005
关键词:Budgets;Petroleum;...
发布机构:Library of Congress. Congressional Research Service.
作者:Copeland, Claudia
发布日期:2012
关键词:Mineral industries;Mining engineering;...
发布机构:Library of Congress. Congressional Research Service.
作者:Copeland, Claudia
发布日期:2014
关键词:Mineral industries;Mining engineering;...
发布机构:Library of Congress. Congressional Research Service.
作者:Cook, Nicolas
发布日期:2012
关键词:Mineral industries;Mines and mineral resources;...
发布机构:Library of Congress. Congressional Research Service.
作者:Copeland, Claudia
发布日期:2009
关键词:Mineral industries;Mining engineering;...
发布机构:Library of Congress. Congressional Research Service.
作者:Humphries, Marc
发布日期:2008
关键词:Mining;Minerals;...
发布机构:Library of Congress. Congressional Research Service.