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1de réir Rayner, David, 1949 Apr. 23-Ábhair “...Mathematics Study and teaching (Secondary) Great Britain....”
Foilsithe / Cruthaithe 2005
LEABHAR -
2de réir Bostock, L.Ábhair “...Mathematics Study and teaching (Secondary) Great Britain....”
Foilsithe / Cruthaithe 1985
LEABHAR -
3de réir Bostock, L.Ábhair “...Mathematics Study and teaching (Secondary) Great Britain....”
Foilsithe / Cruthaithe 1985
LEABHAR