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Office visits by black patients National Ambulatory Medical Care Survey, United States, 1975-76

Koch, Hugo K.
[Hyattsville, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Office of Health Research, Statistics, and Technology, [1979] 1979

Office visits by persons aged 65 and over National Ambulatory Medical Care Survey, United States, 19

Gagnon, Raymond O.
[Hyattsville, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, [1978] 1978

Office visits involving X-rays National Ambulatory Medical Care Survey, United States, 1977

Koch, Hugo K.
[Hyattsville, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Office of Health Research, Statistics, and Technology, [1979] 1979

Office visits to general surgeons National Ambulatory Medical Care Survey, United States, 1975

Gagnon, Raymond O.
[Hyattsville, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, [1978] 1978

Office visits to orthopedic surgeons, National Ambulatory Medical Care Survey : United States, 1980-

Gagnon, Raymond O.
[Hyattsville, Md.] : [U.S. Dept. of Health and Human Services, Public Health Service], [1986] 1986