Haku
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Studies on the thrips (Thysanoptera) species most commonly occurring on cereals in Finland
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1970)
Bionomics, enemies and population dynamics of javesella pellucida (F.) (Hom., delphacidae)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)