“Keystone XL Pipeline (Risk to Ogallala Aquifer)”的意思、由来-开放百科全书

词条	Keystone XL Pipeline (Risk to Ogallala Aquifer)
释义	SeeKeystone PipelineEnvironmental issues
随便看	51 Forth programming language 51forth programming language 51Forth programming language 51 Nemausa 51 (number) 51 Peg 51 Pegasi 51 Pegasi Solar System 51 pegasus 51 Peg b 51 star flag 51 star us flag 51st Battalion, Far North Queensland Regiment 51st Division 51st Highland Division 51st (Highland) Division 51st (Highland) Infantry Division 51st Highland Regiment 51st Highland Volunteers 51st state 51st state of the US 51st state of USA 51st State (song) 51st Street (6 Line) 51st Street (IRT Lexington Avenue Line)

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。