id	keyword
hungeobull-2970	regional
hungeobull-2970	areas
hungeobull-2970	spatial
hungeobull-2970	development
hungeobull-2970	countries
hungeobull-2970	central
hungeobull-2970	periphery
hungeobull-2970	european
hungeobull-2970	diff
hungeobull-2970	centre
hungeobull-2970	nagy
hungeobull-2970	nemes
hungeobull-2970	eastern
hungeobull-2970	poland