| Verfasser | Häufigkeit |
| Norris, Robert |
19 |
| Douglas, Robert J. W. 1920-1979 |
11 |
| Norris, Donald K. 1924- |
10 |
| Norris, Patricia 1931-2015 |
6 |
| Heller, Robert |
5 |
| Norris, Robert S. |
5 |
| Willatt, Norris |
5 |
| Badalamenti, Angelo 1937-2022 |
4 |
| Buergenthal, Thomas 1934-2023 |
4 |
| Engels, Robert 1949- |
4 |
| García, Ronald Víctor ca. 20. Jh |
4 |
| Lee, Sheryl 1967- |
4 |
| Norris, Robert J. |
4 |
| Norris, Robert d. 1791 |
4 |
| Shelton, Dinah 1944- |
4 |
| Bowie, David 1947-2016 |
3 |
| Kelly, Moira 1968- |
3 |
| Lynch, David 1946-2025 |
3 |
| MacLachlan, Kyle 1960- |
3 |
| Norris, Robert E. |
3 |