title: Fracking: Colorado methane study not clear-cut.
authors.forename: Kathleen M
authors.initials: KM
authors.lastname: Sgamma
mesh_terms: D001272:Atmosphere / Q000737:chemistry*; D004784:Environmental Monitoring; D008697:Methane / Q000032:analysis*; D059206:Natural Gas / Q000600:supply & distribution*; D061329:Oil and Gas Fields / Q000737:chemistry*
chemical_list: D059206:Natural Gas; D008697:Methane