Contribution to Mediterranean medieval dietary studies: Stable carbon and nitrogen isotope data of marine and catadromous fish from Provence (9th?14th CE) - Mion L; André T; Mailloux A; Sternberg M; Morales Muniz A; Rosello-Izquierdo E; Llorente Rodríguez L; Herrscher E (Data in Brief, 2022)