Some issues cover 2 years, annual combined (i.e. v. for 1993 covers 1993 and 1992)
Physical description for original version: v. ; 28 cm
原資料等に関する注記
原資料の出版事項: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census : [For sale by Data User Services Division, Customer Services (Publications) , Bureau of the Census