These are the latest editions!! CHEM 110/120 General Chemistry, Petrucci great condition, latest edition (10th); 3-hole punched sheets in binder are perfect for carrying around. includes a CD and a study guide with access to Mastering Chemistry $80 BIOL 111/112 Life the Science of Biology, Sadava, etc.; latest edition (9th) includes study guide and online access to BioPortal (quizzes and tests). Amazing condition. I only opened it once. $125