Acknowledgements
The material acknowledged below is Proprietary (not subject to Creative Commons Licence [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ). See terms and conditions:
Grateful acknowledgement is made to the following:
Course image: Bobby Bradley in Flickr made available under Creative Commons Attribution-NonCommercial 2.0 Licence.
Figure 1: Made available by Amos Wolfe (in Wikipedia) under the terms of the GNU Free Documentation Licence, version 1.2, www.gnu.org;
Figure 2: Copyright © Interfoto Pressebildagentur/Alamy
Figure 3: Copyright © Cate Gillon/Getty Images
Figure 4: Copyright © Gianni Dagli Orti/The Art Archive
Figures 7, 9, 10, 11. 12: Copyright © Bill Royston
Figure 8: Copyright © Jenny Meegan
Figure 13: Copyright © Mark Ervine and Danny Devenny
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