| Author | Titles | | 1.
| Laibach, Heinrich G. | 1 | | 2.
| Laidlar, John | 2 | | 3.
| Laidlar, John F. | 1 | | 4.
| Laiglesia, Beatriz de | 1 | | 5.
| Laiglesia, Juan Fernando de | 2 | | 6.
| Laiglesia y Auser, Francisco | 1 | | 7.
| Laignel-Lavastine | 4 | | 8.
| Laignel-Lavastine, Alexandra | 1 | | 9.
| Lain, Enrico | 1 | | 10.
| Lain Entralgo, Pedro, 1908- | 4 |
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