Tullgren. 1916. [Hylastes opacus, Pityogenes quadridens, Scolytus rugulosus] Medd fran Centralanstalten for Jorsbruksforsk, No 152. Entomologiska Avdelningen No. 27104.
Taxa (in this database) mentioned in this work, by keyword:
Tullgren 1916
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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