| Author | Titles | | 1.
| Gregorovius, Ferdinand, 1821-1891 | 2 | | 2.
| Gregory, Alexis | 3 | | 3.
| Gregory, Gene | 1 | | 4.
| Gregory, R. L., 1923-2010 | 0 | | 5.
| Author is: Gregory, Richard Langton, 1923-2010 | 4 | | 6.
| Gregory, Richard Arman | 1 | | 7.
| Gregory, Richard Langton, 1923-2010 | 4 | | 8.
| Gregory, Rob | 6 | | 9.
| Gregoryan, Hermine | 1 | | 10.
| Gregorz, Maria Eleonore, 1919-2014 | 0 | | 11.
| Author is: Lassnig, Maria, 1919-2014 | 3 | | 12.
| Gregos, Katerina | 5 |
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