@book{2538,
	author = {Study Week on the Econometric Approach to Development Planning and Pontificia Accademia delle scienze.},
	title = {Study Week on the Econometric Approach to Development Planning;},
	publisher = {North-Holland Pub. Co.;},
	year = {1965.},
	address = {Amsterdam,},
	note = {English and French.}
}