Boorum & Pease Bound Columnar Book, 12-column, 150 Pages, 12-7/8 x 15-1/8 (25-150-12) Extra-Durable Bookstyle Bound Columnar Book, 12-7/8 x 15-1/8. Thread-sewn for durability and a flatter writing surface at binding margin. Permanent, waterproof inks. Thread-sewn for durability and a flatter writing surface at binding margin. Permanent, waterproof inks. Unit ruled. Table of Contents page.