Bromwich is a foremost scholar of medieval Welsh literature, and here presents an English version of her and Evans' 1988 Welsh edition of one of the most fertile tales set down in two 14th century manuscripts. Each of the tasks set for Arthur and his men comprises an old folktale. The lengthy introduction comprises a major study of the work. The middle Welsh text is thoroughly annotated. A glossary makes the tale accessible to nonspecialists, but some knowledge of modern Welsh, especially pronunciation, is helpful. No subject index. Annotation c. by Book News, Inc., Portland, Or.