| Author | Titles | | 1.
| Lapa, Hugo | 2 | | 2.
| Lapa, Irene | 1 | | 3.
| Lapa, Ivo | 1 | | 4.
| Lapa, João Inácio Ferreira, 1823-1892 | 6 | | 5.
| Lapa, Jorge 1977- | 1 | | 6.
| Lapa, José Cardoso Pereira | 1 | | 7.
| Lapa, José Roberto do Amaral | 3 | | 8.
| Lapa, M., 1914-1979 | 0 | | 9.
| Author is: Lapa, Manuel, 1914-1979 | 59 | | 10.
| Lapa, M. Rodrigues, 1897-1989 | 75 | | 11.
| Lapa, Manuel, 1914-1979 | 59 |
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