John Tiratsoo
Tiratsoo Technical
PO Box 21, Beaconsfield HP9 1NS, UK
tel: +44 (0)1494 675139
email: jtiratsoo@gs-press.com
www.scientificsurveys.com

B.J. Lowe
Clairon Technical COnferences
3401 Louisiana, #255, Houston, TX 77002, USA
tel: +1 713 521 5929
email: bjlowe@clarion.org
www.clarion.org