You are about to access our book library "Ysgol Bro Tryweryn, Frongoch, Y Bala, Gwynedd, LL23 7NT: Arolygiad dan Adran 10 o Ddeddf Arolygiadau Ysgolion 1996 : rhif ysgol: [661/2214] : dyddiad yr arolygiad: 20-22 Mai, 1997 full version" .