Chwarel y Penrhyn
Subtitle: ddoe a heddiw = The Penrhyn quarry : yesterday and today
By: J. Elwyn Hughes, Bryn Hughes and Dennis Wood.
Contributors: Hughes, Bryn.; Wood, Dennis.
Publisher: Chwarel y Penrhyn
Published: 1980
Place of publication: Bethesda
Language: wel
Number of pages: 11
Notes: Text in Welsh and English.