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By "Petrak, Franz "
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Die Gattungen der Pyrenomyceten, Sphaeropsideen und Melanconieen
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By: Petrak, Franz - Sydow, Hans
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Publication info: Dahlem bei Berlin : Verlag des repertoriums, Fabeckstr. 49 1927
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Holding Institution: Biblioteca Digital del Real Jardin Botanico de Madrid
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