2006 - Problemsolving Workbook W/solutions to Accompany Essential Chemistry (Paperback) ISBN-13: 9780072905205 ISBN-10: 0072905204 Genre: Science & Math ? 2002 - General Chemistry the Essential Concepts Workbook [Third Edition] (Paperback) ISBN-13: 9780072410747 ISBN-10: 0072410744 Genres: Science & Math, Engineering & Transportation ? |