@book{47157,
	author = {Welfe, Władysław.},
	title = {Ekonometryczne modele rynku :},
	year = {1977.},
	address = {Warszawa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=47157}
}