@book{42896,
	author = {RYSZKOWSKI, Lech},
	title = {Landscape diversity :},
	publisher = {Research Center for Agricultural and Forest Environment of the Polish Academy of Sciences :},
	year = {1996.},
	address = {Poznań :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=42896}
}