| Author | Titles | | 1.
| Costés, Joaquín | 1 | | 2.
| Costigan, Arthur William | 4 | | 3.
| Costigan, Charles A. | 1 | | 4.
| Costilhes, Alain | 1 | | 5.
| Costilhes, Cyril 1977- | 1 | | 6.
| Costillo, Luís, 1956- | 3 | | 7.
| Costley, Ron, 1939-2015 | 1 | | 8.
| Costley, Ronald, 1939-2015 | 0 | | 9.
| Author is: Costley, Ron, 1939-2015 | 1 | | 10.
| Coston, Henry | 1 | | 11.
| Coston, John | 2 |
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