Haku
Viitteet 1-2 / 2
"Pest in first" and "natural infestation" methods in the control of tetranychus urticae koch with phytoseiulus persimilis athias-henriot on glasshouse cucumbers
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1976)
Non-chemical control of carrot rust fly in Finland
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1988)