Biodiversity Heritage Library
The Coccidae of California : a descriptive list of the different scale insects found in and reported from California /
By: Carnes, Edward K. - California. State Commission of Horticulture.
Publication info: Sacramento :[State Horticultural Commission],1906.
Holding Institution: University of California Libraries (archive.org)
Subjects: California Coccidae Insect pests Scale-insects
The cottony maple scale in Illinois /
By: Forbes, Stephen Alfred,
Publication info: Urbana, [Ill.] :University of Illinois Agricultural Experiment Station,1907.
Holding Institution: University Library, University of Illinois Urbana Champaign
Subjects: Diseases and pests Illinois Scale-insects Shrubs Trees
The San José and other scale insects prepared for the use of fruit growers and scale inspectors /
By: Lochhead, William, - Ontario. Dept. of Agriculture.
Publication info: [Toronto? :s.n.],1900
Holding Institution: Canadiana.org (archive.org)
Subjects: Diseases and pests Fruit Scale-insects