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Comparing serum ferritin values from different population surveys.

Hyattsville, Md. : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Health Statistics, 1991. 1991

Investigation of nonresponse bias : Hispanic Health and Nutrition Examination Survey.

Rowland, Michael, 1945-
Hyattsville, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics, [1993] 1993

Investigation of nonresponse bias : Hispanic health and nutrition examination survey.

Rowland, Michael, 1945-
Hyattsville, Md. : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Health Statistics, [1993] 1993