Columbia subject headings:
Catholic Church--Liturgy--Early works to 1800.
Durand, Guillaume, approximately 1230-1296. Rationale divinorum officiorum.
Mass--Early works to 1800.
Harvard subject headings:
Beleth, Jean, -1182. Rationale divinorum officiorum.
Illumination of books and manuscripts, Medieval
Liturgics--Early works to 1800.
Princeton subject headings: