Columbia subject headings:
Harvard subject headings:
Councils and synods, Diocesan--Portugal--Porto.
Porto (Portugal)--Church history.
Printing--Portugal--Porto--History.
Publishers and publishing--Portugal--Porto--History.
Sousa, Diogo de, 1460-1532.
Princeton subject headings:
Catholic Church--Portugal--Porto Region--Discipline.
Catholic Church. Diocese of Porto (Portugal)
Councils and synods, Diocesan--Portugal--Porto.
Incunabula--Portugal--Vila Viçosa.
Porto (Portugal)--Church history.
Printing--Portugal--Porto--History--To 1500.