@book{4470,
	author = {V.E. McKelvey Forum on Mineral and Energy Resources and Carter, Lorna M. and Geological Survey (U.S.)  },
	title = {USGS research on energy resources--1990},
	publisher = {U.S. Geological Survey},
	year = {1990.},
	series = {U.S. Geological Survey circular},
	address = {Reston, Va.}
}