Haku
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Control of Rhopalosiphum padi (L.) (Hom., Aphididae) on cereals
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)
Chemical control of sugar-beet pests in Finland: efficiency and economic return
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)
Pests of cultivated plants in Finland in 1974
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1975)