Hanes yr ysgol sir ym Mrynrefail
By: gan y Parch. John Pritchard, Llanberis.
Publisher: Swyddfa'r Goleuad
Published: 1940
Place of publication: Caernarfon
Language: wel
Number of pages: 203
Notes: At head of title: Dosbarth addysg Llanberis a'r cylch.