Specifications include, but are not limited to: A. Publisher’s Library Binding B. Library Pre-bound Book (established by the Library Institute) Specifications: 1. Library Sewing 2. Over-sewing for books over ½ inch thick 3. Round library corners 4. Rounding and backing of the book spine 5. Illustrated covers 6. Top cover protection of clear plastic coating C. Reinforced paperback binding. Specifications: 1. Test is fanned and glued with a polyvinyl adhesive 2. Text must remain flexible. 3. Original cover mounted on a non-woven material (meets with National Association of State Textbooks Administrators specifications) with a clear polyester film, not less than 1.5 mil. Thick Mylar cover or acceptable equal with the original paperback covers mounted, title, and author stamped on the spine. All should be free of blemishes or distortions of any kind. 4. Front and back hinges are reinforced with cloth-end sheets. 5. Easy to read spine letters D. Mass Market Paperback. E. Trade Bindings