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Stamp Issue : 1992-05-30
Perolles Bridge (Pont de Pérolles) across the Saane/Sarine River, in Fribourg, Switzerland.
It Built in 1920 - 1922, 380 m in length and 85 m in height above valley floor or water.
EPFL: Guide des ponts de Fribourg: Les ingénieurs du pont de Pérolles
Ponts de Fribourg: Le pont de pérolles
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