An Introduction to the Theory of Numbers by Ivan Nevin & H.S. Zuckerman Book. 4th Edition Math Book. There are a few front pages that have light pencil marks on them but the rest of the book has no writing. The back 2 pages have creases at the top right corner. The cover has some creases and small areas of damage. The corners have wear. The inside of the front cover has a marker line and a 1977 sticker with someone’s name written on it. Otherwise in good condition.