@book{29924,
	author = {Rexroad, Carl Buckner, and Scott, Alan Johnson,},
	title = {Conodont zones in the Rockford Limestone and the lower part of the New Providence Shale (Mississippian) in Indiana /},
	publisher = {Printed by authority of the State of Indiana :},
	year = {1964.},
	series = {Indiana. Geological Survey. Bulletin},
	address = {Bloomington, Ind. :}
}