Compare	File	Name	Label
	F1	US2000A_0062	Telephone availability
	F2	US2000A_0452	Industry, 1950 basis
	F2	US2000A_0453	Industry
	F2	US2000A_0455	Weeks worked last year
	F2	US2000A_0456	Weeks worked last year, intervalled
	F2	US2000A_0495	Years of active-duty military service
	F2	US2000A_0540	Flag for years of active-duty military service
	F2	US2000A_0557	Flag for various periods of military service
	F2	US2000A_0558	Flag for various periods of military service
	F2	US2000A_0575	Industry, NAICS