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  1. Annales de géologie et de paléontologie / publ. sous la direction du Marquis Antoine de Gregorio.
    By: De Gregorio, Antonio,
    Publication info: Palerme :L.P. Lauriel,1886-1930.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  2. Una gita sulle Madonie e sull'Etna / per Antonio de Gregorio.
    By: De Gregorio, Antonio,
    Publication info: Torino :Club Alpino Italiano,1882.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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