Columbia subject headings:
Codax, Martín, active approximately 1230.
Music--Spain--Galicia (Region)--500-1400--History and criticism.
Harvard subject headings:
Codax, Martín, active approximately 1230--Criticism and interpretation.
Johan, de Cangas--Criticism and interpretation.
Love poetry, Portuguese--History and criticism.
Mendinho--Criticism and interpretation.
Music--500-1400--History and criticism
Portuguese poetry--To 1500--History and criticism.
Troubadours--Spain--Galicia (Region)
Princeton subject headings: