This course was written by Simon Kelley.
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Course image: Alan Colson in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.
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 course:
Figures 2, 10b: Peter Sheldon.
Figures 5, 7, 9, 10a, c, d, 11a, b, 14c, 15c, 17c, 19d, 29b, 30, 35, 36, 39, 43, 44, 45, 46, 50, 51, 53, 54, 57, 58, 59, 60, 61, 62, 63: Andy Tindle.
Figure 11: © Joel Arem/Science Photo Library.
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