@book{24356,
	author = {Beyer, Samuel Walker,},
	title = {The Sioux quartzite and certain associated rocks ...},
	publisher = {Published for the Iowa Geological Survey,},
	year = {1896.},
	series = {Iowa. Geological Survey. [Reports and papers]},
	address = {Des Moines,},
	note = {At head of title: Iowa Geological survey, volume VI.}
}