Haku
Viitteet 1-2 / 2
Population dynamics of cereal aphids and method of predicting population trends
(Agricultural Research Centre, 1976)
The effect of virus diseases transmitted by the leafhopper Javesella pellucida (F.) on the concentration of free amino acids in oats and on the reproduction of aphids
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1966)