| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Liberal Studies: Bk. 1 | 978-0-304-92319-9 (0-304-92319-2) | 1962 | etc. |
| Liberal Studies: Bk. 2 | 978-0-304-92321-2 (0-304-92321-4) | 1964 | " |
| Liberal Studies: Bk. 3 | 978-0-304-92320-5 (0-304-92320-6) | 1967 | " |