@article{1019673, author = "Karl Hans Wedepohl", abstract = "in: A.P. Vinogradov (Editor) Chemistry of the Earth's Crust. Israel Program for Scientific Translation, Jerusalem (1967", pages = "424-239", title = "{G}eochemical and petrographic investigation of the "{K}upferschiefer" in {NW}-{G}ermany", year = "1967", }