Lleisiau'r graig
Subtitle: ysgrifau ar chwareli Mynydd Penmaenmawr gan chwarelwyr
By: (wedi eu golygu gan Gweneth Lilly).
Contributors: Lilly, Gweneth.
Publisher: Cyhoeddiadau Mei
Published: 1992
Place of publication: Penygroes, Gwynedd
Language: wel
Number of pages: 72
Subjects: Quarries and quarrying -- Wales -- Penmaenmawr (Gwynedd); Penmaenmawr (Gwynedd) -- History.