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 felxible 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! Paper Color: White Lab Notebook 100 sets of yellow/white 15# paper Carbon paper included 100 Numbered sets Stapled and Taped Sheet Size: 11" x 9.25"