STORE'S TOP 25 BOOKS.(BOOKS)

The Book House of Stuyvesant Plaza in Guilderland reports this list of its overall top-selling books for 1999, from sales through Dec. 26.

1. ``Harry Potter and the Sorcerer's Stone,'' J. K. Rowling (Scholastic, $5.99, paper)

2. ``Harry Potter and the Chamber of Secrets,'' J. K. Rowling (Scholastic, $17.95, hardcover)

3. ``Harry Potter and the Sorcerer's Stone,'' J. K. Rowling (Scholastic, $17.95, hardcover)

4. ``Harry Potter and the Prisoner of Azkaban,'' J. K. Rowling (Scholastic, $19.95, hardcover)

5. ``Guilderland,'' Alice Begley (Arcadia, Images of America Series, $18.99, paper)

6. ``Tuesdays with Morrie,'' Mitch …