[20140414]R42611_油砂和Keystone XL管道：背景和选定的环境问题.pdf

Oil Sands and the Keystone XL Pipeline: Background and Selected Environmental Issues -name redacted-, Coordinator Specialist in Environmental Policy -name redacted- Analyst in Environmental Policy -name redacted- Analyst in Environmental Policy -name redacted- Specialist in Energy and Infrastructure Policy -name redacted- Specialist in Natural Resources Policy April 14, 2014 Congressional Research Service 7-. www.crs.gov R42611