| Author | Titles | | 1.
| Beltrán, José-Carlos | 1 | | 2.
| Beltrán, Karina, 1968- | 1 | | 3.
| Beltrán Lloris, Miguel | 2 | | 4.
| Beltrán Martínez, Antonio, 1916-2006 | 16 | | 5.
| Beltrán, Michele | 1 | | 6.
| Beltrán, Pío | 1 | | 7.
| Béltran, Sandra | 1 | | 8.
| Beltrán y Rózpide, Ricardo, 1852-1928 | 2 | | 9.
| Beltrand, Jacques | 1 | | 10.
| Beltrand, Jacques, 1874-1977 | 1 |
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