@book{33350,
	author = {Welfe, Aleksander and Polskie Wydawnictwo Ekonomiczne},
	title = {Ekonometria :},
	publisher = {Polskie Wydaw. Ekonomiczne,},
	year = {1997.},
	address = {Warszawa :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=33350}
}