Haku
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Evaluation of predator-prey ratio using Chrysopa carnea Steph. in control of Rhopalosiphum padi (L.)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1977)
Resistance of cereals to the aphids Rhopalosiphum padi (L.) and Macrosiphum avenae (F.) and fecundity of these aphids on Graminae, Cyperaceae and Juncaceae
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1972)
Changes in the yield and protein quantity of oat caused by Rhopalosiphum padi (L.) (Hom., Aphididae)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1968)