| Author | Titles | 1.
| Lucas, António C. | 1 | 2.
| Lucas, António Galvão | 1 | 3.
| Lucas, Artur | 1 | 4.
| Lucas, Bernardo, 1865-1950 | 2 | 5.
| Lucas, Bernardo de Almeida, 1865-1950 | 0 | 6.
| Author is: Lucas, Bernardo, 1865-1950 | 2 | 7.
| Lucas, Bispo de Tui | 1 | 8.
| Lucas, Charles | 2 | 9.
| Lucas, Constança, 1960- | 3 | 10.
| Lucas, Constança Almeida, 1960- | 1 | 11.
| Lucas, Constança de Almeida, 1960- | 0 | 12.
| Author is: Lucas, Constança, 1960- | 3 |
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