1. Oil sands and the Keystone XL Pipeline : background and selected environmental issues [April 14, 2014] Author/Creator: Ramseur, Jonathan L., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2014] Resource Type: Book Access & Availability: Loading
2. Oil sands and the Keystone XL Pipeline : background and selected environmental issues [February 21, 2013] Author/Creator: Ramseur, Jonathan L., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2013] Resource Type: Book Access & Availability: Loading
3. Oil sands and the Keystone XL Pipeline : background and selected environmental issues [July 16, 2012] Author/Creator: Ramseur, Jonathan L., author Publication/Creation: [Washington, District of Columbia] : Congressional Research Service, [2012] Resource Type: Book Access & Availability: Loading