This fourth edition aims for ""a wider representation of women and ethnic minorities. . . stronger international flavor. . . and increased emphasis on urban and contemporary life."" It is substantially different in other ways as well: many old chestnuts have been dropped from the poetry section which has been reduced from approximately 800 to ""over 500"" entries; Richard Adams and a whole new category of science fiction appear under ""Magic""; new critical material includes an essay on ""Illustrations in Children's Books"" by Donnarae MacCann and Olga Richard; and, of course, the bibliography is updated by inclusion of titles since 1971.