Resistance of cereals to the aphids Rhopalosiphum padi (L.) and Macrosiphum avenae (F.) and fecundity of these aphids on Graminae, Cyperaceae and Juncaceae - Markkula, Martti; Roukka, Kaisa (Agricultural Research Centre, 1972)
Keywords: Ka; tuhoeläimet; resistenssi; kevätviljat; kirvat; tuomikirva; Rhopalosiphum padi; viljakirva; Sitobion avenae