Tragardh, I. 1921e. Undersokningar over den storre Margborren, dess Skadegorelse och dess Bekampande [Untersuchungen uber den grossen Waldgartner Myelophilus piniperda]. Meddelanden fran Statens Skogsforsoksanstalt 18(1): 1-101, 2 figs.
Tragardh 1921
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