Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Pasiewicz, M. 1978. Zmiennosc tarczek (Scutellum) i aparatow kopulacyjnych samcow krajowych gatunkow zakorkow (Col., Scolytidae). Maszynopsis-praca magisterska, Inst. Ochr. Lasu AR Poznan.
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