The Panama Canal rat guard
By: by W.C. Rucker, surgeon, United States Public health service ...
Contributors: United States Public health service.
Publisher: Govt. print. off.
Published: 1922
Place of publication: Washington
Language: eng
Subjects: Rats as carriers of disease.
Notes: Reprint no. 751 from the Public health reports, v. 37, no. 20, May 19, 1922 (p. 1207-1209)