Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Mihkelson, S., and H. Ounap. 1983. Feromoonide mojust kuuse-kooreuraski Ips typographus L. [Effect of pheromones on the aggregation of Ips typographus]. Metsanduslikud Uurimused. Estonian SSR 18, 154-160 p.
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