An Universal History of Fable and Demonology Written at the End of All Time
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An Universal History of Fable and Demonology Written at the End of All Time was a book, a copy of which the Doctor had in his TARDIS library.
When the Mara took possession of the Fifth Doctor, it located the book and tore out the pages regarding its own history and lore to help it establish the Sumaran Empire on Manussa several centuries early. (AUDIO: The Cradle of the Snake)