| Author | Titles | 1.
| Guidi, Lliana | 2 | 2.
| Guidi, Michelangelo | 1 | 3.
| Guidi, Virgilio, 1891-1984 | 1 | 4.
| Guidi, Virgilio, 1972-1984 | 1 | 5.
| Guidieri, Rémo, 1940- | 8 | 6.
| Guido, da Verona, 1881-1939 | 1 | 7.
| Guido, Marcello, 1953- | 2 | 8.
| Guido, Maria Grazia | 1 | 9.
| Guidol Ricart, José | 1 | 10.
| Guidon, Niède | 1 |
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