Chemistry by Susan A. Zumdahl and Steven S. Zumdahl- Set of 2

Zuhmdahl Chemistry (sixth edition). Set of two- main book and Technology guide. Details listed (such as pages and Publication year) are for the main book. The main book is in good condition, with some wear and markings on cover. There is a stain on front cover below Periodic Table and a smaller one inside the back cover, with the Physical Constants. The Technology Guide accompaniment is unopened.