A very good natural history bookseller in Switzerland is:
F.Fluck-Wirth, International Booksellers for Botany and Natural Sciences
CH-9053 Teufen, Switzerland
telephone 071 33 16 87
telefax 071 33 16 64
cable address krypto 9053 Teufen
email address unknown, possibly not still available (?)
Marjatta Rautiala
Botanical library
PB 7
FIN 00014 University of Helsinki
email: Marjatta.Rautiala@Helsinki.Fi