Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Svihra, P. 1967b. Nepodcnujme prikryvanie lapakov proti lykozrutovi smrekovemu (Ips typographus L) [Let's not underestimate covering the trap trees for pine engraver Ips typographus L] . Les, Bratislava 23:213-214.
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