Haku
Viitteet 51-53 / 53
Pests of cultivated plants in Finland in 1977
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1978)
Mangold fly: predicting damage and the economics of control
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1978)
Studies on the hibernation of certain species of thrips living on cereal plants
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1969)