| Author | Titles | | 1.
| Maeyer, Marcel, 1920- | 4 | | 2.
| Maeztu, Ramiro de, 1875-1936 | 4 | | 3.
| Mafalda, 1945- | 0 | | 4.
| Author is: Osório, Mafalda, 1945- | 2 | | 5.
| Mafalda, Ana | 1 | | 6.
| Mafalda Osório, 1945- | 0 | | 7.
| Author is: Osório, Mafalda, 1945- | 2 | | 8.
| Mafalda Santos, 1980- | 0 | | 9.
| Author is: Santos, Mafalda, 1980- | 13 | | 10.
| Mafamude, D. de, pseud. | 0 | | 11.
| Author is: Macedo, Diogo de, 1889-1959 | 1737 | | 12.
| Mafamude, G. de, pseud. | 0 | | 13.
| Author is: Macedo, Diogo de, 1889-1959 | 1737 | | 14.
| Mafamude, Gastão de, pseud. | 0 | | 15.
| Author is: Macedo, Diogo de, 1889-1959 | 1737 | | 16.
| Maffei, Andrea | 1 |
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