C.F. · C. K. · Clyde Frederick Kohn · F K
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| World Today | 978-0-07-035292-6 (0-07-035292-5) | 1941 | D. Drummond |
| World Today: Tchrs' | 978-0-07-035293-3 (0-07-035293-3) | " | |
| World Today: Tests | 978-0-07-035286-5 (0-07-035286-0) | " |