| Author | Titles | 1.
| Friedrich, Julia | 2 | 2.
| Friedrich, Julia ; Konig, Kasper | 1 | 3.
| Friedrich, Perzynski | 1 | 4.
| Friedrich, Theodor | 2 | 5.
| Friedrich, Werner | 1 | 6.
| Friedrich-Ebert-Stiftung. Kurt-Schumacher-Akademie (Bad Münstereifel, Alemanha) | 1 | 7.
| Friedrichs, Alina | 1 | 8.
| Friedrichs, Ronja | 1 | 9.
| Friel, Brian, 1929-2015 | 1 | 10.
| Frieling, Rudolf | 1 |
|
|