Columbia subject headings:
Petrucci, Pandolfo, 1452-1512.
Siena (Italy)--History.
Harvard subject headings:
Petrucci, Pandolfo, 1452-1512
Siena (Italy)--Foreign relations.
Siena (Italy)--History--1355-1557.
Princeton subject headings:
Petrucci, Pandolfo, 1452-1512.
Siena (Italy)--Foreign relations.
Siena (Italy)--History.