@book{212377,
	author = {Davis, Harold T. and Nelson, William Franklin Cram,},
	title = {Elements of statistics :},
	publisher = {The Principia Press, Inc.,},
	year = {1937.},
	address = {Bloomington, Ind. ;},
	edition = {2d ed., rev. and enl.},
	note = {Bibliography included in preface; "Sources of statistical data": p. 11-14; "References": p. 369-370.}
}