Physical description for original version: 1 v. (various pagings) : 28 cm
書誌注記
Includes bibliographical references
原資料等に関する注記
原資料の出版事項: Washington, DC : U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census : For sale by Supt. of Docs., U.S. G.P.O., 1992