@book{27671,
	author = {Piersol, Robert James, and Workman, Lewis Edwin,},
	title = {Porosity, total liquid saturation, and permeability of Illinois oil sands,},
	year = {1940.},
	address = {Urbana, Ill.,},
	note = {At head of title: State of Illinois...Department of registration and education...Division of the State geological survey...}
}