Schuder, L. 1975 How to control scale insects on shade trees and shrubs.. Publication of the Purdue University Cooperative Extension Service E-29: 2 pp.

Notes: Species reviewed include cottony maple scale, oyster shell scale, European elm scale, scurfy scale, San Jose scale, terrapin and lecanium scales, pine leaf scale, juniper scale, and euonymus scale; hosts; brief field descriptions; chemical control.