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Classificazione di mayr. en Classification of Mayr tabella in Mayr Waldbau auf naturgesetzlicher Grundlage Ein Lehr und Handbuch Berlin Parey it Classificazione di Mayr tabella in Mayr Waldbau auf naturgesetzlicher Grundlage Ein Lehr und Handbuch Berlin Parey cfr schema di classificazione di MayrPavari archive org page Author