Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Szmidt, A. 1980. Possible control of Blastophagus [Tomicus] piniperda by spraying of unbarked Scots pine roundwood. I. (In Polish). Folia Forestalia Polonica, Serie A, Lesnictwo 24:157-165.
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