Haku
Viitteet 1-2 / 2
Population dynamics of cereal aphids and method of predicting population trends
(Agricultural Research Centre, 1976)
The effect of amino acids, vitamins and trace elements on the development of Acyrthosiphon pisum Harris (Hom., Aphididae)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)