Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Cola, L., and H. Freude. 1972. Pityophthorus lichtensteini Ratzeburg und knoteki Reitter, zwei sicher zu trennende Arten (Coleopt. ) Nachrichtenblatt der bayerischen Entomologen 21:12-14.
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