Royal Botanic Gardens, Kew
Advances in Legume Biology, Nodulation, Fabaceae, Third International Legume Conference 1992, Legume researchers, V Congresso Latinoamericano de Botánica 1990, Legumes, Leguminosae, IOPB (International Organization of Plant Biosystematics), Legume systematics, Nitrogen fixation, ILDIS (International Legume Database and Information Service), and TAXACOM