This free course was written by Jackie Musgrave and Liz Middleton. It was first published in October 2020.
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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:
Figure 1: NigelSpiers; Shutterstock.com
Figure 2: ALX1618; Shutterstock.com
Figure 3: Martchan; Shutterstock.com
Figure 4: Nomadness; Shutterstock.com
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