Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics, 1972.
1972
Marquis, Kent H.
Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics : [For sale by the Supt. of Docs., U.S. G.P.O.], 1972.
1972
Cannell, Charles F.
Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics, 1977.
1977