3 Volume Set. Lighten your load - only pack around the necessary pages of your textbook while you need them! This complete 3-piece set is custom made to Oregon State University curriculum. Vol.1 (PH 211) - ISBN-13: 978-1-256-51794-8 ISBN-10: 1-256-51794-1 Vol.2 (PH 212) - ISBN-13: 978-1-256-51797-9 ISBN-10: 1-256-51797-8 Vol.3 (PH 213) - ISBN-13: 978-1-256-51804-4 ISBN-10: 1-256-51804-2