| Author | Titles | | 1.
| Ulloa, Ángel C. | 1 | | 2.
| Ulloa, Francisco Antonio, 1783-1816 | 1 | | 3.
| Ulloa, Iliana | 1 | | 4.
| Ulloa, Luís, 1869-1936 | 2 | | 5.
| Ullrich, Ferdinand | 4 | | 6.
| Ullrich, Wolfgang | 1 | | 7.
| Ullyett, Kenneth | 1 | | 8.
| Ulm. Museum der Stadt (Alemanha) | 0 | | 9.
| Author is: Ulmer Museum (Ulm, Alemanha) | 11 | | 10.
| Ulmann, Doris May, 1882-1934 | 1 | | 11.
| Ulmer, Bruno | 1 |
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