Chwareli Dyffryn Nantlle =
Subtitle: Dyffryn Nantlle quarries.
Contributors: Gwynedd Archives Service.
Series: Adnoddau i ysgolion = -- Resources for schools; Adnoddau i ysgolion
Publisher: Gwynedd Archives Service.
Place of publication: Caernarfon
Language: eng
Other titles: Dyffryn Nantlle quarries.