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1Cyhoeddwyd 1930Awduron Eraill: “...Kierkels, Petrus, b. 1882...”
Location: Paul Bechtold Library, Catholic Theological Union
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2Cyhoeddwyd 1931Awduron Eraill: “...Kierkels, Petrus, b. 1882...”
Location: Paul Bechtold Library, Catholic Theological Union
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