@book{177412,
	author = {United Nations.},
	title = {Supplement to the manual on training of statistical personnel at the primary and intermidiate levels /  /},
	publisher = {United Nations, Secretariat of the Economic Commission for Europe,},
	year = {1987.},
	address = {Geneva :},
	note = {Description based on: v. 9, no. 7 (July 1967) ; title from cover.}
}