To contact Peter Thomson,  the author of this web site:

• If your query may be of interest to other people reading this page, please use the public forums for discussion. these are all linked from the index page.
• Please also check the public discussions- your query may have already been answered there.
• You can also use the forums for discussion when you don't want to reveal your email address.
• My university students should not use this page. Use my normal university email address.

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