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The Arno is a river in the Tuscany region of Italy. It is the most important river of central Italy after the Tiber. [1][2]

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Arno River, principal stream of the Toscana (Tuscany) region, in central Italy. Rising on the slopes of Monte Falterona in the Tuscan Apennines, it flows for 150 miles (240 km) to the Ligurian …

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