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- E-bookHistory and Philosophy of Spirits, Demons and ApparitionsAugustin Calmet
- E-bookGelehrte Verhandlung der Materie von den Erscheinungen der Geister, und der Vampire in Ungarn, Mähren, etc.Augustin Calmet
- E-bookHistory and Philosophy of Spirits, Demons and ApparitionsAugustin Calmet
- E-bookDissertation on ghosts, demons and vampiresAugustin Calmet