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1Cyhoeddwyd 1908“...Jesuits. Praepositus generalis...”
Location: John J. Burns Library, Boston College
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2Cyhoeddwyd 1909“...Jesuits. Praepositus Generalis...”
Location: Dinand Library, College of the Holy Cross
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3Cyhoeddwyd 1946“...Jesuits. Praepositus Generalis (1946-1964 : Janssens)...”
Location: John J. Burns Library, Boston College
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