| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Introductory College Mathematics: Algebra 2 | 978-0-7216-4415-8 (0-7216-4415-5) | 1974 | Joseph Howland |
| Introductory College Mathematics: History of Real Numbers | 978-0-7216-4416-5 (0-7216-4416-3) | 1974 | " |
R. H. · R. Hackworth · Robert D. Hackworth · Robert D. Hackworth, and Joseph Howland Robert H. Alwin · Robert H.