By Upton,Penney. harlow,England: Pearson education, 2011 . xii,260p.: 9780273735168
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]]>By Upton, Penney. London : Learning Matters, 2011 . x, 222 pages : 23 cm. 9780857252760
]]>By Upton, Penney.. Exeter : Learning Matters, 2011 . x, 222 pages: 25 cm.. 9780857252760
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