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): 8 1/8 in x 10 3/8 in; Sheet Size (W x H): 7 7/8 in x 10.167 in; 7 7/8 in x 10.160 in; Ruling: Quadrille (5 sq./in.).