"eia-0131-10" . "Natural Gas Annual 2010. DOE/EIA-0131(10)"^^ . "2011"^^ . "http://www.eia.gov/naturalgas/annual/pdf/front_matter.pdf"^^ . "report" . "1 year"^^ . . . . . . . . . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .