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Figure 1 Diane Mallett
Figure 2 Mike Luft
Figure 3 Sarah Fletcher
Figure 4 Mike Luft
This extract is taken from K202 produced by the BBC on behalf of the Open University © 2002 The Open University.
Oliver Gouldthorpe: http://www.flickr.com/ photos/ ollie_g/ 996235604/ [Details correct as of 12 December 2008]
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