Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Tragardh, I., and V. v. Butovitsch. 1935a. Bericht uber die Bekampfungsaktion gegen Borkenkafer nach den Sturmverheerungen 1931-1935. Meddelanden fran Statens Skogsforsoksanstalt 8, Nr. 1.
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