Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada - Lochhead, W. (Blakiston, 1919)

Class book of economic entomology with special reference to the economic insects of the northern United States and Canada - Lochhead, W. (P. Blakiston's Son, 1919)

Classification of the Aleyrodidae - United States. Office of Experiment Stations. (Government Printing Office, 1913)

A classification of the scale insect genus Asterolecanium - Russell, Louise M. (Louise May), 1905 - (U.S. Dept. of Agriculture, 1941)

The coccid genera Chionaspis and Hemichionaspis - Cooley, R. A. (Robert Allen), 1873 -1968 (Carpenter & Morehouse, 1899)

The Coccidae - MacGillivray, Alexander Dyer, 1868 -1924 (Scarab company, 1921)