The complete Life Science Library - 26 volumes includes the 'Guide to Science and Index' Typical wear and tear is on the outside as seen in photos - all pages clean. Carved wooden bookends included. This library will keep anyone interested in science busy for years - 5000 pages total with numerous illustrations, photos, charts, graphs, etc. These fascinating books helped me excel in math, chemistry, physics, etc. in both high school and university - and will do the same for any student. They are excellent reading for anyone.