Haku
Viitteet 1-2 / 2
Pests of cultivated plants in Finland in 1984
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1985)
Wheat blossom midges, Sitodiplosis mosellana (Gehin) and Contarinia tritici (Kirby) in Finland during 1981-1987
(Agricultural Research Centre, 1989)