Physical description for original version: 64 p. : 28 cm
書誌注記
Includes bibliographical references (p. 59)
原資料等に関する注記
原資料の出版事項: [Baltimore, Md.?] : U.S. Dept. of Health and Human Services, Social Security Administration, Office of Policy, Office of Research, Statistics, and International Policy, [1984?]