Haku
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Evaluation of predator-prey ratio using Chrysopa carnea Steph. in control of Rhopalosiphum padi (L.)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1977)
Effectiveness of mechanical oviposition barriers against the cabbage root fly, Delia radicum, in the laboratory
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1984)
Experiences of cucumber growers on control of the two-spotted spider mite Tetranychus telarius (L.) with the phytoseiid mite Phytoseiulus persimilis A.H.
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1972)