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Cantus Organi · Calendar

Twelve Holy Brothers, Martyrs

Ss. Duodecim Fratrum Mártyrum

IV class · Red

Proper

Ss. Gervasio et Protasio pp. 214–214

Nova Organi Harmonia ad Graduale Romanum (Lemmens Institute, Mechelen: H. Dessain, 1942). Page images are in the public domain.

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