Better teeth,
Rogers, James Frederick, 1870-1965.
Better teeth, by James Frederick Rogers, M.D. chief Division of physical education and school hygiene ... Department of the interior. Bureau of education, 1927. - [Washington] U.S. Govt. print. off., 1927. - iii, 19 p. illus., pl. 23 cm. - United States. Bureau of Education. Health Education, no. 20 .
e 27000133
Teeth--Care and hygiene.
L111 / .A67 no. 20
Better teeth, by James Frederick Rogers, M.D. chief Division of physical education and school hygiene ... Department of the interior. Bureau of education, 1927. - [Washington] U.S. Govt. print. off., 1927. - iii, 19 p. illus., pl. 23 cm. - United States. Bureau of Education. Health Education, no. 20 .
e 27000133
Teeth--Care and hygiene.
L111 / .A67 no. 20