Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Okolow, C. 1980. Polygraphus punctifrons Thomson, eine interessante, boreale Borkenkaferart. Ein Beitrag zur Biologie und Okologie. Acta Musei Reginaehradecensis S. A Suplementum 1980: 75-76.
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