You can reach Henrik Hansen and Anita Christensen at:
Danish Institute of Plant and Soil Science
Department of Apiculture
Ledreborg alle 98
DK-4000 Roskilde, Denmark
Phone number: 46 32 02 04
fax number: 46 32 55 05.
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* Seppo Korpela Agricultural Research Center of Finland *
* Phone INT + 358 16 188 576 Institute of Plant Protection *
* FAX INT + 358 16 188 584 FIN-31600 Jokioinen *
* E-mail [log in to unmask] Finland *
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