TY - RPRT TI - The potential source of lead in the Permian Kupferschiefer bed of Europe and some selected Paleozoic mineral deposits in the Federal Republic of Germany AU - K.H. Wedepohl AU - M.H. Delevaux AU - B. R. Doe PY - 1978 DO - 10.1007/bf00375513 UR - https://pubs.usgs.gov/publication/70012860 ID - 70012860 ER -