New filter to save teeth
Series: Housekeepers' chat -- 4-2-38; Housekeepers' chat -- 4-2-38.
Publisher: United States Department of Agriculture, Office of Information, Radio Service
Published: 1938
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Dental enamel; Dental hygiene
Notes: "Saturday, April 2, 1938."