@book{30179,
	author = {ZUMBERGE, James Herbert and NELSON, Clemens Arvid},
	title = {Elements of physical geology /},
	publisher = {John Wiley & Sons,},
	year = {1976.},
	address = {New York :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=30179}
}