Haku
Viitteet 1-2 / 2
The effect of pyrethrum preparations on certain common horticultural pests
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1964)
Studies on the biology of the cabbage root fly (Hylemya brassicae Bouché) and the turnip root fly (Hylemya floralis Fall.)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)