Diwydiant copr Mynydd Parys =
Subtitle: Parys Mountain copper industry.
Contributors: Gwynedd (Wales). Department of Culture and Leisure. Archives and Museums Education Service.
Series: Adnoddau i ysgolion = -- Resources for schools; Adnoddau i ysgolion
Publisher: Gwynedd Archives and Museums Education Service.
Place of publication: [Caernarfon]
Language: eng
Other titles: Parys Mountain Copper industry.
Notes: In plastic wallet.