Department of Plant, Soil and Entomological Sciences, University of Idaho (USA). Joint research project on “Invasion genetics of Crupina vulgaris”, financed by the USDA. Laboratoire de Biologie Vegetal, Universitat de Perpinyà (France). Informal links. Research cooperation Laboratorio de Etnobotánica, Departament of Biology, Faculty of Science, Universidad Nacional Autónoma de México (Mexico). Informal links. Research cooperation. Museo Nacional de Historia Natural, Asunción (Paraguay). Scientific programme of the Conservatoire et Jardin Botaniques de la Ville de Genève. Research cooperation, joint publications. Shrub Sciences Laboratory, United States Department of Agriculture, Provo (Utah, USA). Informal links. Research cooperation, joint publications.
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