| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Ethical Choice | 978-0-02-902060-9 (0-02-902060-3) | 1970 | John Boyd Orr |
| Perspectives in philosophy;: A book of readings | 978-0-03-076755-5 (0-03-076755-5) | 1969 | |
R.B. · R. Beck · R.N. · R. N. Beck · Robert B. · Robert Beck · Robert N. · Robert N. Beck · Robert Nelson