_:vb2229386 . _:vb2229385 . _:vb2229385 "Bundesanstalt f\u00FCr Geowissenschaften und Rohstoffe (BGR)"@de . _:vb2229385 . _:vb2229386 "" . _:vb2229385 . _:vb2229386 "" . _:vb2229386 "" . _:vb2229386 "" . _:vb2229385 _:vb2229386 .