Books about Civilization, Celtic
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Celtic Scotland : A history of ancient Alban. Volume 3 (of 3), Land and people
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Celtic Scotland : A history of ancient Alban. Volume 1 (of 3), History and ethnology
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Clan Traditions and Popular Tales of the Western Highlands and Islands
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Celtic Scotland : A history of ancient Alban. Volume 2 (of 3), Church and culture
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Observations critiques sur l'archélogie dite préhistorique, spécialement en ce qui concerne la race celtique (1879) (French)