Periodontal disease among youths 12-17 years, United  States
By: U.S. Dept. of Health, Education and Welfare, Public Health Service.
Series: DHEW publ -- no. (HRA) 74-1623; Vital and health statistics; PHS pub -- no. 1000, series 11, no. 141
Publisher: s.n.]
Published: 1974
Place of publication: [S.l
Language: eng