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Planche 12 Les Traverses [title] [image in watercolor] Chemin Couvert Traverses D Tranchees Traverses Traverses tournantes [center part of the drawing] Parapet dela tranchee B Parapet dela tranchee B Traverses a Crochet B Traverses A [left part of the drawing] Tranchee Double Parapet de la Tranchee Parapet de la Tranchee [right part of the drawing] Tranchee Directe Traverses