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2gan Barry, DavidLocation: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Cyhoeddwyd 1914
Cael y testun llawn
Pamphlet -
3gan Barry, DavidLocation: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Cyhoeddwyd 1931
Cael y testun llawn
Pamphlet -
4gan Barry, David WilliamLocation: University Libraries of CUA, Catholic University of America
Cyhoeddwyd 1979
Traethawd Ymchwil Llyfr