This free course was written by Liz Moody and Ronald Macintyre. It was first published in February 2019 and updated in November 2021.
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The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:
Audio 1: The Bottom Line: a co-production between the BBC and the Open University
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