_:vb2217417 _:vb2217418 . _:vb2217417 . _:vb2217417 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@de . _:vb2217417 . _:vb2217418 . _:vb2217418 "Hannover" . _:vb2217418 "30655" . _:vb2217418 "DE" . _:vb2217417 . _:vb2217418 "Stilleweg 2" .