| Author | Titles | | 1.
| Utiyama, Ioshifumi | 1 | | 2.
| Utópía Libros (Firma) | 1 | | 3.
| Utopia : mitos e formas, Lisboa, 1990 | 1 | | 4.
| Utra, Jorge de | 1 | | 5.
| Utrabo, Gustavo, 1984 - | 1 | | 6.
| Utrera Gómez, Reys | 1 | | 7.
| Utrera, Rafael | 1 | | 8.
| Utriainen, Anu | 2 | | 9.
| Utrillo, Maurice, 1883-1955 | 2 | | 10.
| Utrillo, Miguel | 1 |
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