| Author | Titles | | 1.
| Arouca, Renata | 1 | | 2.
| Arouet, François Marie 1694-1778 | 0 | | 3.
| Author is: Voltaire, pseud. | 36 | | 4.
| Aroux, E. | 1 | | 5.
| Arozena, Teresa | 9 | | 6.
| ARP Associação Profissional de Conservadores-Restauradores de Portugal | 1 | | 7.
| Arp, Carl | 1 | | 8.
| Arp, François | 1 | | 9.
| Arp, Hans, 1886-1966 | 0 | | 10.
| Author is: Arp, Jean, 1886-1966 | 6 | | 11.
| Arp, Hans Peter Wilhelm, 1886-1966 | 0 | | 12.
| Author is: Arp, Jean, 1886-1966 | 6 | | 13.
| Arp, J., 1886-1966 | 0 | | 14.
| Author is: Arp, Jean, 1886-1966 | 6 |
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