| Author | Titles | | 1.
| Valentiner, Wilhelm Reinhold, 1880-1958 | 12 | | 2.
| Valentines-Álvarez, Jaume | 1 | | 3.
| Valentinetti, Claudio M. | 1 | | 4.
| Valentini, Gaetano | 1 | | 5.
| Valentini, Gianni | 1 | | 6.
| Valentini, Maria do Rosaria | 1 | | 7.
| Valentini, Nanni, 1932-1985 | 1 | | 8.
| Valentini, Paolo | 1 | | 9.
| Valentyn, Heike van den | 1 | | 10.
| Valenza, Emilia | 1 |
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