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Conservatoire botanique national des Pyrénées et de Midi-Pyrénées

Graf, F., Frei, M., Schwarz, M., Böll, A., 2006 . Use and importance of mycorrhiza in site-specific restoration. In: Soil-bioengineering : Ecological Restoration with native plants an seed material. HBLFA Raumberg-Gumpenstein, Irdning: 155-160.