Full-featured bound books are thread-sewn for durability and a flatter writing surface at binding margin. Premium white, acid-free paper and permanent, waterproof inks help preserve recorded information. Unit ruled, numbered pages. Undated for ultimate flexibility. Includes Table of Contents page. Pages Per Book: 150; Book Size (W x H): 10 1/8 in x 12 1/4 in; Sheet Size (W x H): 9 7/8 in x 11 15/16 in; Ruling: 6 Col.