| Author | Titles | | 1.
| Roberto, Fátima | 1 | | 2.
| Roberto, M. Conceição | 1 | | 3.
| Roberto, Manuel, 1965- | 2 | | 4.
| Roberto Matta, 1911-2002 | 0 | | 5.
| Author is: Matta, 1911-2002 | 12 | | 6.
| Roberto Nobre, 1903-1969 | 0 | | 7.
| Author is: Nobre, Roberto, 1903-1969 | 50 | | 8.
| Roberto, Paulo | 3 | | 9.
| Roberto, Paulo, 1958- | 1 | | 10.
| Roberto Polo Gallery (Bruxelas, Bélgica) | 1 | | 11.
| Roberto, Rita, 19--?- | 1 | | 12.
| Roberto, Rita, 1982- | 1 |
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