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Gragnaniello, S.; Fulgione, D.; Milone, M.; Soppelsa, O.; Cacace, P.; Ferrara, L. (June 2001). "Sparrows as Possible Heavy-Metal Biomonitors of Polluted Environments". Bulletin of Environmental Contamination and Toxicology. 66 (6): 719–726. Bibcode:2001BuECT..66..719G. doi:10.1007/s001280068. PMID11353373. S2CID8789890.
"Garden with colonnade (peristyle)". Pompeii and the Roman Villa: Art and Culture around the Bay of Naples. National Gallery of Art. Archived from the original on 2010-06-02. Retrieved 2010-04-20.
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