@book{26973,
	author = {Searight, Walter Vernon,},
	title = {Slacking properties of South Dakota coals,},
	publisher = {University of South Dakota,},
	year = {1932.},
	series = {South Dakota. State Geologist. Report of investigations,},
	address = {Vermillion, S.D.,},
	note = {At head of title: South Dakota geological and natural history survey, E. P. Rothrock, state geologist.}
}