For more information, contact:
Edgar van der Grift
Wageningen Environmental Research, Environmental Science Group
Wageningen University and Research
P.O. Box 47, 6700 AA Wageningen, Netherlands
Wageningen Campus, Building 100+101
Droevendaalsesteeg 3, 6708 PB Wageningen, Netherlands
Tel. +31 (0)317 48 60 11
Fax +31 (0)317 41 90 00
E-mail:edgar.vandergrift@wur.nl