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Sommer Giorgio n. Lato del Vesuvio Napoli. it Giorgio Sommer Lato del Vesuvio Napoli Numero di catalogo en Giorgio Sommer Flank of Mount Vesuvius Naples Catalogue scan Creator Giorgio Sommer PDold File Sommer Giorgio Lava del Vesuvio Napoli Cornell university website Sommer File Sommer Giorgio Lato del Vesuvio Napoli