@book{28670,
	author = {Hussey, Russell C.},
	title = {The Middle and Upper Ordovician rocks of Michigan.},
	year = {1952.},
	series = {Michigan. Dept. of Conservation.  Geological Survey Division.  Publication 46.  Geological series,},
	address = {Lansing,},
	note = {"A completion of a report written by Professor Hussey and published as a part of Geological Survey Publication 40, Geological series, 34."}
}