First Direct Evidence of Agrarian Practices in the Alava Plateau (Northern Iberia) During the Middle Ages Through Carbon and Nitrogen Stable Isotope Analyses of Charred Seeds

1. García-Collado, M.I.
2. Quirós Castillo, J.A.
3. Tereso, J.P.
4. Seabra, L.
5. Lubritto, C.
6. Altieri, S.
7. Ricci, P.