@book{27896,
	author = {Mineral resources survey.},
	title = {Directory of Montana oil and gas industry,},
	publisher = {Montana school of mines,},
	year = {1943.},
	series = {Montana. State bureau of mines and geology. Memoir},
	address = {Butte, Mont.,},
	note = {At head of title: State of Montana. Bureau of mines and geology, Francis A. Thomson, director ...}
}