Columbia subject headings:
Carthusians--Liturgy.
Catholic Church--Liturgy--Texts--Manuscripts.
Church music--Catholic Church--Manuscripts.
Church music--Catholic Church.
Gregorian chants--History and criticism.
Manuscripts, Latin (Medieval and modern)--South Africa--Cape Town.
Music--Manuscripts--South Africa--Cape Town.
South African Library. Manuscript. Grey 3.c.23.
South African Library. Manuscript. Grey 4.c.7.
South African Library. Manuscript. Grey 6.b.3.
Harvard subject headings:
Carthusians--Liturgy.
Church music--Catholic Church--16th century.
Church music--Catholic Church--500-1400.
Gregorian chants--Manuscripts.
Grey Collection (South African Library)
Music--Manuscripts--South Africa--Cape Town.
Princeton subject headings:
Carthusians--Liturgy.
Catholic Church--Liturgy--Texts--Manuscripts.
Church music--Catholic Church--Manuscripts.
Church music--Catholic Church.
Gregorian chants--History and criticism.
Manuscripts, Latin (Medieval and modern)--South Africa--Cape Town.
Music--Manuscripts--South Africa--Cape Town.
South African Library. Manuscript. Grey 3.c.23.
South African Library. Manuscript. Grey 4.c.7.
South African Library. Manuscript. Grey 6.b.3.