00381nas a2200133   4500000000100000008004100001653001900042653001800061653002900079653002500108653003300133100002400166245005700190       2013                            d10aborder regions10aborder states10across-border interaction10across-border regions10athe Polish-German borderland1 aŁukasz Wróblewski00aNew approach towards research in cross-border region