| Verfasser | Häufigkeit |
| Grabowski, Jan Antoni 1882-1950 |
39 |
| Grabowski, Jan 1962- |
33 |
| Grabowski, Jan |
13 |
| Engelking, Barbara 1962- |
6 |
| Grabowski, Jan 1893-1986 |
6 |
| Libionka, Dariusz 1963- |
3 |
| Pruski, Witold |
3 |
| Schuch, Stanisław |
3 |
| Grabowski, Jan P. |
2 |
| Chantry, Xavier |
1 |
| Grabowski, Jan Eugenjusz |
1 |
| Grabowski, Zbigniew R. |
1 |
| Müller, Wolfgang |
1 |
| Rossoliński-Liebe, Grzegorz 1979- |
1 |