| Author | Titles | | 1.
| Grassi, Luigi | 3 | | 2.
| Grassi, Maurizio | 1 | | 3.
| Grassinger, Dagmar | 2 | | 4.
| Grassinger, Peter | 1 | | 5.
| Grasskamp, Walter, 1950- | 1 | | 6.
| Grassley, Heidi, 19--?- | 1 | | 7.
| Grässlin, Karola | 4 | | 8.
| Grassmann, Marcelo, 1925- | 1 | | 9.
| Grassmann, Marcelo, 1925-2013 | 1 | | 10.
| Grasso, Mimmo | 2 |
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