| Author | Titles | | 1.
| Marcos, João | 1 | | 2.
| Marcos, Juliano, pseud. | 0 | | 3.
| Author is: Segurado, Jorge, 1898-1990 | 119 | | 4.
| Marcos, Luís Humberto | 5 | | 5.
| Marcos, Margarita Estella, 1930-2020 | 0 | | 6.
| Author is: Estella Marcos, Margarita M., 1930-2020 | 5 | | 7.
| Marcos, Maria Adelaide | 1 | | 8.
| Marcos, Maria Antonieta Murta | 1 | | 9.
| Marcos, Maria Lucília | 1 | | 10.
| Marcos Martins Design Ltda. (Firma) | 1 | | 11.
| Marcos, Paulo | 1 | | 12.
| Marcos, Rui de Figueiredo | 1 |
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