| Author | Titles | | 1.
| Lapa, M. Rodrigues, 1897-1989 | 75 | | 2.
| Lapa, Manuel, 1914-1979 | 59 | | 3.
| Lapa, Manuel Francisco Almeida e Vasconcelos, 1914-1979 | 0 | | 4.
| Author is: Lapa, Manuel, 1914-1979 | 59 | | 5.
| Lapa, Manuel Rodrigues, 1897-1989 | 0 | | 6.
| Author is: Lapa, M. Rodrigues, 1897-1989 | 75 | | 7.
| Lapa, Manuela | 1 | | 8.
| Lapa, Maria da Luz Antunes | 2 | | 9.
| Lapa, Maria Eduarda, 1895-1976 | 0 | | 10.
| Author is: Lapa, Eduarda, 1895-1976 | 22 | | 11.
| Lapa, Martim, 1953- | 7 | | 12.
| Lapa Palace (Lisboa, Portugal) | 1 | | 13.
| Lapa, Paula | 1 |
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