21.   The company pays more on average for used books at the end of the school year, Tuori said.

22.   The Internet market for used books has had a banner year.

23.   The owner sent him to the Atlanta library, to look in the Yellow Pages of the New York City phone book for used book dealers.

24.   The playground also offers used books for children to informally borrow and exchange.

25.   The Web has made it easier to track down used books, but not without a price, according to a study by two Ohio University professors.

26.   They also buy used books, and exchange them with friends.

27.   Tiny public libraries in Lake Placid, N.Y., and Camden, Maine, put out used books for sale, perfect for a bus traveler to browse.

28.   To build up class libraries, she shops at used book sales at suburban libraries.

29.   Two well-stocked sources for used books, Valley Books and Book Marks, are around the corner from the Rosenthals, steps apart on North Pleasant Street.

30.   Used books are usually more than fine, but not this time of year.