| Verfasser | Häufigkeit |
|---|---|
| Härtel, Reinhard 1945- | 99 |
| Hartel, Wilhelm von 1839-1907 | 71 |
| Härtel, Insa | 44 |
| Härtel, Ines 1972- | 34 |
| Härtel, Helmar 1942- | 32 |
| Härtel, Herbert | 30 |
| Hartel, Brigitte | 26 |
| Härtel, Charmine E. J. 1959- | 26 |
| Hartel, August 1844-1890 | 25 |
| Ashkanasy, Neal M. 1945- | 24 |
| Härtel, Hans-Hagen | 23 |
| Hartel, W. | 18 |
| Härtel, Susanne | 18 |
| Breitkopf & Härtel | 17 |
| Hartel, Dirk H. 1972- | 16 |
| Zerbe, W. J. | 15 |
| Hartel, Gabriele 1961- | 14 |
| Hartel, Herbert R. | 14 |
| Härtel, Hermann | 13 |
| Härtel, Otto 1912-2011 | 13 |