Special Publication No. 3, Ticks And Tickborne Diseases, I. Genera And Species Of Ticks, Part 3. Genera O-X
Citation
Doss, Mildred A.; Farr, Marion M.; Roach, Katharine F.; Anastos, George (1974). Special Publication No. 3, Ticks And Tickborne Diseases, I. Genera And Species Of Ticks, Part 3. Genera O-X. United States Government Printing Office. Available electronically from https : / /hdl .handle .net /1969 .1 /92067.