@book{30745,
	author = {Bolewski, Andrzej},
	title = {Encyklopedia surowców mineralnych.},
	publisher = {Wydaw. CPPGSMiE PAN,},
	year = {1993.},
	address = {Kraków :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=30745}
}