'Canllawiau Ysgrifennu Cymraeg' (A language and spelling guide) by J. Elwyn Hughes

This handy paperback guide is a new directory aimed to help when writing in the Welsh language, words and phrases that are regularly spelled incorrectly are listed, this new volume is an useful guide for office work, school pupils and students for writing Welsh accurately.  An useful companion to 'Canllawiau Iaith a Chymorth Sillafu' by J. Elwyn Hughes.