_:vb2064172 . _:vb2064171 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@de . _:vb2064172 "Deutschland" . _:vb2064171 . _:vb2064171 . _:vb2064171 . _:vb2064172 "Hannover" . _:vb2064171 _:vb2064172 . _:vb2064172 "30655" . _:vb2064172 "Stilleweg 2" .