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Covariances for estimated totals when comparing between years

Bean, Judy A.
Hyattsville, Md. (6525 Belcrest Rd., Hyattsville 20782) : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Health Statistics, [1992] 1992

Covariances for estimated totals when comparing between years

Bean, Judy A.
Hyattsville, Md. (6525 Belcrest Rd., Hyattsville 20782) : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Health Statistics, [1992] 1992