Hywel Williams1953BooksGwaith cymdeithasol a'r iaith GymraegCassell's Chronology of World HistoryTouchlineGreat Speeches Of Our Time Speeches That Shaped The Modern WorldGeirfa gwaith cymdeithasol =Britain's power elitesGuilty menThe Sun KingsGreat Speeches Of Our TimeDays that changed the worldAuthor data: Open Library