TY - SER AU - Bugge,T. AU - Ringas,J.E. AU - Leith,D.A. AU - Ringas,J.E. AU - Leith,D.A. TI - Upper Permian as a new play model on the mid-Norwegian continental shelf: Investigated by shallow stratigraphic drilling KW - Estratigrafía KW - Geología submarina KW - Noruega ER -