TY - `THES` AU - Ncube, Abdon Ngazimbi TI - Lead, zinc and copper deposits in clastic sediments : investigated on the examples of Laisvall (Sweden), Fredericktown (Missouri,U.S.A.) and Maubach/Mechernich (West Germany) PY - 1978 LA - eng SP - IV, 164 Bl. PB - Heidelberg, Univ., Diss., 1978 CN - 78 Q 131 AN - UBHD-1495535 ER -