Columbia subject headings:
Harvard subject headings:
Italy--History--1268-1492--Sources.
Mining law--Italy--Massa Marittima Region--History--Sources.
Princeton subject headings:
Massa Marittima (Italy). Ordinamenta super arte fossarum rameriae et argenteriae civitatis Massae
Mines and mineral resources--Italy--Massa Marittima--History--Sources.
Mines and mineral resources--Italy--Tuscany--History--Sources.
Mining law--Italy--Massa Marittima--History--Sources.
Mining law--Italy--Tuscany--History--Sources.