Haku
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Mesopolobus graminum (Hårdh) (Hym., Pteromalidae), its population dynamics and influence on Javesella pellucida (F.)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1970)
The effect of pyrethrum preparations on certain common horticultural pests
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1964)