New Line Cinema will be releasing "The Lord of the Rings" trilogy in three separate installments, and Houghton Mifflin Tolkien's U.S. publisher since the release of The Hobbit in 1938 will be re-releasing each volume of the trilogy separately and in a boxed set (ISBN 0-618-15397-7. $22; pap. ISBN 0-618-15396-9. $12). Copyright 2001 Cahners Business Information.