@book{19171,
	author = {Dziubiński, Izydor},
	title = {Poradnik matematyczny :},
	publisher = {Państwowe Wydaw. Naukowe,},
	year = {1978.},
	address = {Warszawa :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=19171}
}