Crwsâd trwy berswâd
Subtitle: hanes Undeb y Gymraeg a Sioe Gymraeg Porthaethwy
By: gan John Lasarus Williams.
Publisher: Undeb y Gymraeg
Published: 2003
Place of publication: Caernarfon
Language: wel
Number of pages: 52
Subjects: Undeb y Gymraeg -- History.; Sioe Gymraeg Porthaethwy.; Welsh language -- Social aspects.