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Sheet 3, Boulogne, Carte Géologique Détaillée de, 1885, 2nd edition, 1:80,000 scale
Sheet 3, Boulogne, Carte Géologique Détaillée de, 1885, 2nd edition, 1:80,000 scale

Sheet 3, Boulogne, Carte Géologique Détaillée de, 1885, 2nd edition, 1:80,000 scale

Bureau de Researches Geologiques et Minieres

Sheet 3, Boulogne, Carte Géologique Détaillée de, 1885, 2nd edition, 1:80,000 scale. Base map 1837. No issue date. Colour printed map, 62.5 x 91cm, (with notice explicative, 62.5 x 117cm) dissected and mounted on linen folding to 20.5 x 13 cm.; linen folded over to protect map edges. Neat manuscript notes in pencil within notice explicative.On outside as folded, book plates of mapseller, Ch. Béranger and of University College, Exeter. The Channel occupies approx. 60% of this map. In very good condition.