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Coulon, Augustin de and Cara, Olga (2008) Do better qualified teachers teach better? Reflect - the Magazine of the NRDC, 11. pp. 18-20.
Cara, Olga and Coulon, Augustin de (2008) Skills for Life teachers' qualifications and their learners' progress in adult numeracy: Research Summary. Project Report. National Research and Development Centre for adult literacy and numeracy, Institute of Education, University of London, London.