Caouissin, (Ronan) - Gwenn ha du. The Breton secret society sworn to restore Brittany's independence. Ronan, Pleyber- Christ 1938. In-12° paperback, illustrated cover by X.-V. Haas. 158 pp. 1 ff. First edition of Ronan Caouissin's famous "Gwenn ha du". Good condition.

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