@book{30180,
	author = {STRAHLER, Arthur Newell},
	title = {Principles of Physical Geology /},
	publisher = {Harper & Row,},
	year = {cop.1977.},
	address = {New York :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=30180}
}