Haku
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Occurrence and control of alphids causing damage to cereals in FInland in 1959
(Maatalouskoelaitos, 1961)
Root rot as a cause of red clover decline in leys in Finland
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
Chemical weed control in Finland in 1887-1965
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1969)
Bionomics, enemies and population dynamics of javesella pellucida (F.) (Hom., delphacidae)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)