1992 - Addition and Subtraction Rock Version [Rock 'n Learn] (Paperback) ISBN-13: 9781878489067 ISBN-10: 1878489062 Genres: Children's Books, Books on CD ? Addition Rap Version [Rock 'n Learn] (Paperback) ISBN-13: 9781878489098 ISBN-10: 1878489097 Genres: Children's Books, Science & Math ? |