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1od Krull, Vigilius H. (Vigilius Herman), 1874-Location: Hesburgh Libraries, University of Notre Dame
Izdano 1933
Knjiga -
2od Krull, Vigilius H. (Vigilius Herman), 1874-Location: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Izdano 1908
Polni tekst
Pamphlet -
3od Krull, Vigilius H. (Vigilius Herman), 1874-Location: U.S. Catholic Special Collection, University of Dayton
Izdano 1913
Knjiga