Haku
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Frog-hoppers (Hom., Cercopidae) in strawberry plantations
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1970)
Dispersal of leafhoppers and their enemies to oatfields
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1972)
Biology of dicranotropis Hamata (Boh.) (Hom., Araeopidae)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1964)
Early- and high-summer flight periods of leafhoppers
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1973)
Seasonal aspects of leafhopper (Hom., Auchenorrhyncha) fauna in oats
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1971)
Comparison of leafhopper faunae in cereals
(Agricultural Research Centre, 1971)