Bakke, A. 1981b. Massenfang des Grossen Fichtenborkenkafers Ips typographus (L) im Rahmen einer intergrierten Bekampfung [Mass trapping of the large spruce bark-beetle Ips typographus as part of an integrated control program] . Mitteilungen der Deutschen Gesellschaft fur Allgemeine und Angewandte Entomologie 2:339-342.
Bakke 1981
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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