| Author | Titles | | 1.
| Lanzner, 1936- | 5 | | 2.
| Lanzner, 1936- | 1 | | 3.
| Lanzoni, Francesco | 1 | | 4.
| Lao-tsze | 1 | | 5.
| Laou, Julius Amédée | 1 | | 6.
| Laoureux, Sébastien | 1 | | 7.
| Lapa, Adelmo | 2 | | 8.
| Lapa, Albino, 1898-1968 | 34 | | 9.
| Lapa, Albino dos Santos, 1898-1968 | 1 | | 10.
| Lapa, Álvaro, 1939-2006 | 69 |
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