Having migrated from academic (U of Maryland-College Park) to government (National Security Archives), librarian Foerstel revises and expands his 1994 survey of censorship in US schools and libraries. He reviews the field generally, looks at laws and court decisions, and focuses on particular authors. In the section of the 50 most banned books from 1996 through 2000, newcomer Harry Potter joins such old favorites as Huckleberry Finn , Catcher in the Rye , and Of Mice and Men . Annotation c. Book News, Inc., Portland, OR (booknews.com)