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1LEABHARFoilsithe / Cruthaithe 1978“…Schools Council (Great Britain). Sixth Form Mathematics Project…”
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2LEABHARFoilsithe / Cruthaithe 1975“…Schools Council (Great Britain). Sixth Form Mathematics Project…”
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3LEABHARFoilsithe / Cruthaithe 1976“…Schools Council (Great Britain). Sixth Form Mathematics Project…”