@book{30393,
	author = {Rexroad, Carl Buckner,},
	title = {Stratigraphy and conodont paleontology of the Brassfield (Silurian) in the Cincinnati Arch area /},
	publisher = {Printed by authority of the State of Indiana,},
	year = {1967.},
	series = {Geological Survey bulletin 36},
	address = {Bloomington, Ind. :}
}