Pettey, F.W. 1946a Biological control of prickly pear.. Farming in South Africa 21: 31-33.
Notes: Among the pests discussed is Dactylopius opuntiae.
Pettey, F.W. 1946a Biological control of prickly pear.. Farming in South Africa 21: 31-33.
Notes: Among the pests discussed is Dactylopius opuntiae.