Educational attainment by economic characteristics and marital status
著者
書誌事項
Educational attainment by economic characteristics and marital status
（Sixteenth census of the United States, 1940 / United States Department of Commerce, Bureau of the Census, . Population . Eduaction）
U.S. Govt. Print. Off., 1947
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注記
"Prepared under the supervision of Leon E. Truesdell"