Physical description for original version: vi, 53 p. ; 28 cm
書誌注記
Bibliography: p. 16
原資料等に関する注記
原資料の出版事項: Hyattsville, MD ; Washington, D.C. : U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics : For sale by the Supt. of Docs., U.S. G.P.O., 1986