A representative survey of frequency of epiphytic lichens at the regional and national levels and its use for the red list of Switzerland

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Dietrich, M., & Scheidegger, C. (1997). A representative survey of frequency of epiphytic lichens at the regional and national levels and its use for the red list of Switzerland. In R. Türk & R. Zorer (Eds.), Bibliotheca lichenologica: Vol. 68. Progress and problems in lichenology in the nineties. Proceedings of the 3. symposium of the International Association for Lichenology (IAL3) (pp. 145-154). J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung.