| Author | Titles | 1.
| Cadavez, António | 2 | 2.
| Cadbury, William Adlington | 3 | 3.
| C.A.D.C. | 1 | 4.
| Caddeo, Rinaldo | 1 | 5.
| Cadei, Antonio | 1 | 6.
| Cadel, A. | 1 | 7.
| Cadel, Howard | 1 | 8.
| Cadell, Francis Campbell Boileau, 1871-1935 | 1 | 9.
| Cadell, Violet Elizabeth | 4 | 10.
| Cadena de Villasanti, Pedro | 1 |
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