| Author | Titles | | 1.
| Zeal (Firma de Design) | 1 | | 2.
| Zealey, Linda | 1 | | 3.
| Zebedeu, pseud. | 0 | | 4.
| Author is: Gonçalves, António Augusto, 1848-1932 | 6 | | 5.
| Zebre, Peter | 1 | | 6.
| Zebrowski, Mark | 1 | | 7.
| Zebrowski-Rubin, Stefan | 1 | | 8.
| Zec, Peter, 1956- | 3 | | 9.
| Zeca Craveirinha, 1951- | 0 | | 10.
| Author is: Craveirinha, Zeca, 1951- | 1 | | 11.
| Zecchin, Franco, 1952- | 1 | | 12.
| Zech, Hanne | 2 |
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