Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Salonen, K., E. Pulliainen, and M. Koponen. 1968. Sex ratios in Blastophagus piniperda L. (Col., Scolytidae) in Finland. Annales Entomologici Fennici 34(1):31-37.
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