https://openlibrary.org/books/OL6952737M.opds Apologetica elementary apologetics for pulpit and pew 2011-09-13T20:49:12Z P. A. Halpin https://openlibrary.org/authors/OL2509530A/P._A._Halpin J.F. Wagner New York 1905 vi, 134 p. "A course of fifty-two sketches for short sermons ... defending the Catholic position." eng https://openlibrary.org/books/OL6952737M https://archive.org/details/apologeticaeleme00halp 6468952 05007570