_:vb2302648 . _:vb2302648 _:vb2302649 . _:vb2302648 . _:vb2302649 "30655" . _:vb2302649 "Hannover" . _:vb2302649 "DE" . _:vb2302648 . _:vb2302648 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@en . _:vb2302649 . _:vb2302649 "Stilleweg 2" .