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1Llyfrgan Carsberg, Bryan V.“...Institute of Chartered Accountants in England and Wales. Research Board...”
Cyhoeddwyd 1989
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2Llyfrgan Cowton, Christopher J.“...Institute of Chartered Accountants in England and Wales. Research Board...”
Cyhoeddwyd 1985
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3Llyfrgan Archer, Simon“...Institute of Chartered Accountants in England and Wales. Research Board...”
Cyhoeddwyd 1989