De operatione daemonum / Michael Psellus ; cum notis Gaulmini curante Jo. Fr. Boissonade. Accedunt inedita opuscula Pselli.
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De operatione daemonum / Michael Psellus ; cum notis Gaulmini curante Jo. Fr. Boissonade. Accedunt inedita opuscula Pselli. Credit: Wellcome Collection. Public Domain Mark