http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sixteenth census of the United States: 1940
a comparison of the 1930 and the 1940 census occupation and industry classifications and statistics; a comparable series of occupation statistics, 1870 to 1930; and a social-economic grouping of the labor force, 1910 to 1940
Population. Comparative occupation statistics for the United States, 1870 to 1940
Comparative occupation statistics for the United States, 1870 to 1940
1 online resource (xii, 206 pages) : charts, tables.
by Dr. Alba M. Edwards ; prepared under the supervision of Dr. Leon E. Truesdell, Chief Statistician for Population.
At head of title: United States Dept. of Commerce, Jesse H. Jones, Secretary. Bureau of the Census. J.C. Capt, Director.
U.S. federal agency documents, decisions, and appeals