Doten, S.B. 1912 The European elm scale (Gossyparia spuria, Modeer.). Monthly Bulletin, California (State) Commission of Horticulture 1: 89-100.
Notes: Life history, injury, control.
Doten, S.B. 1912 The European elm scale (Gossyparia spuria, Modeer.). Monthly Bulletin, California (State) Commission of Horticulture 1: 89-100.
Notes: Life history, injury, control.