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Grateful acknowledgement is made to the following sources for permission to reproduce material within this book.
Roger Dettmer, 'Safety in Numbers', IEE Review, vol. 50, no. 11, Nov 2004.
Hogge B., (2004) 'Closer to the State'. The Guardian Newspaper issued 2 December 2004.
Figure 12 By permission of Lomak International
Figure 13 By permission of Lomak International
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