BYPASS VALVE WORKS, MAY 14, 1870. SOURCE ARMENTIERES Travaux de dérivation de la Vanne. Source d'Armentières. 14 mai 1870. Photographie d'Auguste-Hippolyte Collard (1812-1887). Paris, musée Carnavalet.

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Photo credit: © PWB Images / Alamy / Afripics
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Keywords: achevement, armentieres, derivation, la, montagne, recherche, riviere, source, travaux, vanne