@book{27907,
	author = {Willman, H. B.},
	title = {High-purity dolomite in Illinois,},
	year = {1943.},
	series = {Illinois.  State geological survey.  Report of investigations},
	address = {Urbana, Ill.,},
	note = {At head of title: State of Illinois, Dwight H. Green, governor.  Dept. of registration and education, Frank C. Thompson, director.  Division of the State geological survey, M.M. Leighton, chief.}
}