Nicol, J. 1952 Systemic insecticides and the mealybug vectors of swollen-shoot virus of cacao.. Nature (London) 169: 120.
Notes: Trials of chemical controls against Pseudococcus citri, P. njalensis and Ferrisia virgata.
Nicol, J. 1952 Systemic insecticides and the mealybug vectors of swollen-shoot virus of cacao.. Nature (London) 169: 120.
Notes: Trials of chemical controls against Pseudococcus citri, P. njalensis and Ferrisia virgata.