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Ryfkin, B. J. 1933a. Befall der Walder Weissrusslands durch Forstschadlinge nach Ergebnissen der Probeuntersuchungen im Jahre 1930 . Verlag Selgassektar, Minsk 1933:41-78.
Ryfkin, B. J. 1933b. Kampf gegen die Hauptschadlinge des Waldes [Scolytidae, p. 40-55]. Landw. Verlag Minsk 1933.
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