TY - JOUR A1 - Herbst, R. A1 - Kapp, Ingo A1 - Krummel, H. A1 - Lück, Erika T1 - Seismic sources for shallow investigatons : a field comparison from Northern Germany Y1 - 1998 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/23205 ER -