1. A rapid method for quantitative counts of coccidial oocysts in chicken feces;Beach;Cornell Vet.,1943
2. Immunity or resistance of the chicken to coccidial infection;Johnson;Oregon Agr. Expt. Sta. Bul.,1927
3. Johnson, W. T., 1930. Director's biennial report, 1928-1930, Oregon Agr. Coll. Expt. Sta. Report, page 119.
4. Coccidiosis in gallinaceous birds;Tyzzer;Amer. J. Hygiene,1929
5. Coccidiosis in gallinaceous birds, II. A comparative study of species of Eimeria of the chicken;Tyzzer;Amer. J. Hyg.,1932