_:vb2130827 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@de . _:vb2130828 "30655" . _:vb2130828 "DE" . _:vb2130827 _:vb2130828 . _:vb2130828 "Stilleweg 2" . _:vb2130827 . _:vb2130827 . _:vb2130827 . _:vb2130828 "Hannover" . _:vb2130828 .