Poems, verses and songs, 19th C. 
OBK19-004
- Title: Koplak
- Author: Piarres Ibarrart
- Researcher: Patri Urkizu
- Source: Bertsolaritzaren historia II, (Patri Urkizuren edizioa). Etor, 1991
- Editor: www.armiarma.com
- Owner: Euskarabidea-mediateka
- Permission to query: Free
- Permission to publish: Limited
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