Cyfres a Wyddoch Chi: A Wyddoch Chi am Enwau Lleoedd Cymru?
Welsh place-names explained, including the shortest and longest names, the smallest and largest villages, and meanings of different elements within the names of rivers, hills, mountains, villages, bays, fields , towns and 'Cymru' itself . One of six titles, full of information and pictures, in the A wyddoch chi? series.