| Author | Titles | | 1.
| Koepp, Friedrich | 1 | | 2.
| Koeppe, Wolfram | 2 | | 3.
| Koepplin, Dieter | 6 | | 4.
| Koering, Elise, 1976- | 1 | | 5.
| Koerner, Joseph Leo, 1958- | 7 | | 6.
| Koers, N. H. | 1 | | 7.
| Koerting, Gustav | 1 | | 8.
| Koester, Joachim, 1962- | 1 | | 9.
| Koester, Olaf | 1 | | 10.
| Koestlé-Cate, Jonathan | 1 |
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