Founded in 1887 by D.M. Bare, Roaring Spring Paper Products has been an integral part of the Roaring Spring community for more that 130 years. Employing over 200 people, the company prides itself on remaining a family-owned, American small business. This book is ideal for use in labs and science classes. The smooth 20# green writing paper is printed with 4 square/inch graph layout. The pages are consecutively numbered from 1-152. The covers are made from a flexible red 10 pt pressboard. The book is glued and taped along the 11 3/4″ side, and sheets are not designed for removal from the book. There are 76 sheets/152 pages per book. Proudly made in USA!