Ysgol Addysg
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1/01/96 → 31/10/11
Project: Ymchwil
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Ware, J.
1/03/11 → 31/05/11
Project: Ymchwil
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Muse, E.
1/10/06 → 3/09/10
Project: Ymchwil
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Ware, J.
1/02/10 → 31/07/10
Project: Ymchwil
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1/10/09 → 31/05/10
Project: Ymchwil
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Muse, E.
1/07/06 → 31/08/09
Project: Ymchwil
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14/11/05 → 31/07/09
Project: Ymchwil
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1/10/03 → 31/07/09
Project: Ymchwil
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1/03/09 → 31/07/09
Project: Ymchwil