Haku
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Resistance of plants to the pea aphid Acyrthosiphon pisum Harris (Hom., Aphididae) : I. Fecundity of the biotypes on different host plants
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1970)
Pests of cultivated plants in Finland in 1975
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)
Mortality of Aphidoletes aphidimyza Rond. (Dipt., Itonididae) larvae treated with acaricides
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)
Control of Rhopalosiphum padi (L.) (Hom., Aphididae) on cereals
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)