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机译:美国西部在犹他州首个锌铜资源上滑坡
机译:America West Resources完成了Horizon煤矿的矿山开发并开始全面生产
机译:RESOURCES FOR TEACHING FROM THE NETHERLANDS, WEST GERMANY AND THE UNITED STATES OF AMERICA
机译:AMERICAN WATER RESOURCES ASSOCIATION announces the FIFTEENTH AMERICAN WATER RESOURCES CONFERENCE “Water Resources Management in a Changing Society” and NATIONAL SYMPOSIUM “The Use of Scientific Information in Planning for Environmental Quality Objectives”
机译:De lapuissanceaméricaine:Origine,institutions,esprit politique,ressources militaires,agricoles,commerciales et industriellesdesÉtats-Unis / From the american powers:Origin,institution,political regimeology,military,agricultural,commercial and industrial resources of the United states
机译:煤矿安全卫生调查报告; 2009年5月9日,地下煤矿淹没水资源导致矿工陷入困境.alpha Natural Resources,Cobra Natural Resources,LLC。,mountaineer alma a. mine,Wharncliffe,mingo County,West Virgina。证号46-08730