@book{18014,
	author = {BOLEWSKI, Andrzej and PARACHONIAK, Włodzimierz},
	title = {Petrografia /},
	year = {1974.},
	address = {Warszawa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=18014}
}