An assessment of the occlusion of the teeth of youths 12-17 years, United States /
Kelly, James E.,1923-
Harvey, Clair R.
National Center for Health Statistics (U.S.)
Rockville, Md. : Health Resources Administration, National Center for Health Statistics ; [Washington : for sale by the Supt. of Docs., U.S. Govt. Print. Off.],
1977.
Includes bibliographical references.
Malocclusion in children
Youth
Dental surveys