| Description | Two copies of an extract from Beiträge zur Indogermanistik und Keltologie containing a short article by Henry Lewis titled 'Welsh 'oes' is' /
Dau gopi o ddetholiad o Beiträge zur Indogermanistik und Keltologie gan gynnwys erthygl byr gan Henry Lewis teitledig 'Welsh 'oes' is'
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