Category: Lab & Scientific Products Extra-Durable Bookstyle Bound Columnar Books, 10-3/8 x 8-1/8. Thread-sewn for durability and a flatter writing surface at binding margin. Permanent, waterproof inks. Unit ruled. Table of Contents page. Black cover with durable red spine and corners Waterproof and permanent inks Single page form Quad; 5 Square 10 3/8 x 8 1/8 Inches
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