Columbia subject headings:
Catholic Church--Foreign relations.
Catholic Church--History--20th century.
Radio Vaticana.
Radio broadcasting--Political aspects--Vatican City--History--20th century.
Radio in propaganda--Vatican City--History--20th century.
Radio in religion--Catholic Church.
Radio stations--Vatican City--History.
World War, 1939-1945--Propaganda.
World War, 1939-1945--Religious aspects--Catholic Church.
Harvard subject headings:
Catholic Church--Foreign relations.
Catholic Church--History--20th century.
Radio Vaticana.
Radio broadcasting--Political aspects--Vatican City--History--20th century.
Radio in propaganda--Vatican City--History--20th century.
Radio in religion--Catholic Church.
Radio stations--Vatican City--History.
World War, 1939-1945--Propaganda.
World War, 1939-1945--Religious aspects--Catholic Church
Princeton subject headings:
Catholic Church--Foreign relations.
Catholic Church--History--20th century.
Radio Vaticana.
Radio broadcasting--Political aspects--Vatican City--History--20th century.
Radio in propaganda--Vatican City--History--20th century.
Radio in religion--Catholic Church.
Radio stations--Vatican City--History.
World War, 1939-1945--Propaganda.
World War, 1939-1945--Religious aspects--Catholic Church.