Die Sonn- und Festtagslieder des vatikanischen Graduale - Johner, Dominicus, 1874-1955. (Regensburg : F. Pustet, 1933)
Includes index.
"Literatur": p. [xi]-xii.
Keywords: Catholic Church -- Liturgy; Catholic Church; Church music -- Catholic Church; Gregorian chants -- History and criticism; Mass