| Author | Titles | | 1.
| Wallis, Simon | 1 | | 2.
| Walliser-Schwarzbart, Eileen | 1 | | 3.
| Wallnig, Gunter | 1 | | 4.
| Wallock, Leonard | 1 | | 5.
| Wallon, Aude Virey | 1 | | 6.
| Wallon, Dominique | 1 | | 7.
| Wallon, Emmanuel | 1 | | 8.
| Wallon, Henri, 1879-1962 | 2 | | 9.
| Wallon, Simone | 6 | | 10.
| Wallraf-Richartz-Museum (Colónia, Alemanha) | 21 |
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