@book{20410,
	author = {Klein, Arthur Jay,},
	title = {Correspondence study in universities and colleges /},
	publisher = {G.P.O.,},
	year = {1920.},
	series = {Bulletin / Department of the Interior, Bureau of Education ;},
	address = {Washington :},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.00207734251}
}