1. Andrews , J. 1930 Host specificity in Balantidium coli. Trans. Congr. Far East. Assoc. Trop. Med. 8th Congr. 191 214
2. An epidemiological study of protozoa parasitic in wild rats in Baltimore, with special reference to;Andrews;Endamoeba histolytica. Am. J. Hyg.,1936
3. Biological studies on the Giardia of rats.;Armaghan;Am. J. Hyg.,1937
4. Host specificity and specificity of animal parasites.;Becker;Am. J. Trop. Med.,1933
5. Transmission of Giardia lamblia and G. muris to the wood rat.;Bonestell;J. Parasitol.,1935