_:vb2220496 . _:vb2220496 . _:vb2220497 "Hannover" . _:vb2220496 _:vb2220497 . _:vb2220497 "Stilleweg 2" . _:vb2220497 "30655" . _:vb2220496 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@en . _:vb2220496 . _:vb2220497 . _:vb2220497 "Deutschland" .