Pererindod Melangell : barcudiaid, carneddi ac eglwysi : taith i encilfan santes islaw mynyddoedd y Berwyn = Pererindod Melangell : kites, cairns and churches : a walk to a saint's retreat below the B. Published by Cyngor Sir Powys in 2000. Publication and catalogue information, links to buy online and reader comments.