The occurrence in Northern Poland of Melampsoridium betulinum (Pers.) Kleb. on Betula humilis Schrk
Abstract
New Polish localities are here reported of Melampsoridum Betulinum on Betula humilis. It has been observed that this infection occurs frequently at man-activitated sites.
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PDFDOI: https://doi.org/10.5586/am.1972.004
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