@book{30371,
	author = {LEET, L. Don and JUDSON, Sheldon},
	title = {Physical geology /},
	publisher = {Prentice Hall,},
	year = {1978.},
	address = {Englewood Cliffs :},
	edition = {5th ed.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=30371}
}