Newell, W. 1899a Some injurious scale insects.. Bulletin of the Iowa Agricultural Experiment Station 43: 145-176.
Notes: Brief notes on appearance, biology, and hosts of 21 species in seven genera; control.
Newell, W. 1899a Some injurious scale insects.. Bulletin of the Iowa Agricultural Experiment Station 43: 145-176.
Notes: Brief notes on appearance, biology, and hosts of 21 species in seven genera; control.