1/10/11 → 29/02/16
Project: Ymchwil
Edwards, R. T.
1/10/11 → 31/01/16
1/07/08 → 31/07/08
McCarthy, I.
1/06/20 → 30/11/23
1/05/21 → 29/11/23
1/05/21 → 30/11/23
Hoare, Z.
1/10/15 → 26/04/17
Hughes, D.
1/06/16 → 30/08/20