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Internet links

www.arthurclesen.com
United States Distributor of Dutch Trig

www.ufis.ca
Canadian Distributor of Dutch Trig

http://na.fs.fed.us/spfo/pubs/howtos/ht_ded/ht_ded.htm
Dutch elm disease publication from the USDA Forest Service

http://www.ext.nodak.edu/extpubs/plantsci/trees/pp324w.htm
North Dakota State University Extension Service Information sheet

http://www.dutchelmdisease.org
A website with very detailed scientific background information on Dutch elm disease

www.opzijnbest.nl
Compilation page of internet links relevant for Arboriculture in the Netherlands