Columbia subject headings:
Harvard subject headings:
Catholic Church--Portugal--Liturgy--Bibliography--Catalogs.
Catholic Church--Portugal--Liturgy--Bibliography.
Catholic Church--Spain--Liturgy--Bibliography--Catalogs.
Catholic Church--Spain--Liturgy--Bibliography.
Early printed books--Portugal--Bibliography--Catalogs.
Early printed books--Portugal--Bibliography.
Early printed books--Spain--Bibliography--Catalogs.
Early printed books--Spain--Bibliography.
Liturgies--Bibliography--Catalogs.
Liturgies--Bibliography.
Portugal--Imprints--Bibliography--Catalogs.
Portugal--Imprints--Bibliography.
Spain--Imprints--Bibliography--Catalogs.
Spain--Imprints--Bibliography.
Princeton subject headings:
Catholic Church. Liturgy Texts--Bibliography--Catalogs.
Spain--Imprints--Catalogs.