@book{sch_1991.1544, title = {Cephalopoden der oberen deutschen Kreide – Reprint}, author = {Schlüter, Clemens August and Riegraf, Wolfgang and Scheer, Udo }, year = {1991}, publisher = {(Goldschneck) Korb}, pages = {1–454}, url = {https://www.kreidefossilien.de/322}, keywords = {schlüter,cephalopoda,ammoniten,deutschland,monographie} }