Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Tragardh, I. 1921c. Redogorelse for verksamheten vid Statens- Skogsforsoksanstalt under ar 1920. III. Skogsentomologiska ardelningen. Meddelanden fran Statens Skogsforsoksanstalt. Vol. 18.