Dagobert Soergel writes > I will look at this when I come back from the ASIST meeting end of next > week. Thanks so much. We shall be awaiting your response. Have fun at the meeting. I should have gone too, actually. Cheers, Thomas Krichel mailto:krichel@openlib.org http://openlib.org/home/krichel RePEc:per:1965-06-05:thomas_krichel