| title | ISBN-13 | year of publication |
|---|---|---|
| Arithmetic | 978-0-07-034225-5 | 1977 |
| Basic Mathematics: Arithmetic With an Introduction to Algebra | 978-0-07-034230-9 | 1980 |
| Basic Mathematics: Arithmetic with an Introduction to Algebra | 978-0-07-034231-6 | 1980 |
| Becoming a Therapist: A Workbook for Personal Exploration | 978-1-57766-131-3 | 2000 |
| Elementary Algebra | 978-0-07-034221-7 | 1979 |
D.K · D. Kerr · (D-R) · Donald K. · Donald Kerr · Donald-R · R.K. · R. Kerr