"Fauna of Nassau molluscs" is a scientific work of the German malacologist Wilhelm Kobelt, which is devoted to the study of the diversity of molluscs in the territory of Nassau, which is located in Germany. In the book, the author describes the species, families, and genera of molluscs found in this region, and provides data on their morphology, anatomy, and ecology. The work contains illustrations and color images to help identify mollusk species. The Mollusc Fauna of Nassau is a valuable source of information for scientists studying malacology as well as for nature lovers and nature enthusiasts.