(1949). Historical statistics of the United States 1789-1945: A supplement to the statistical abstract of the United States / prepared by the Bureau of the Census with the cooperation of the Social Science Research Council, 1949. U.S. Gov. Print. Off..

Historical Statistics of the United States 1789-1945: A Supplement to the Statistical Abstract of the United States / Prepared by the Bureau of the Census with the Cooperation of the Social Science Research Council, 1949. Washington: U.S. Gov. Print. Off., 1949.

Historical Statistics of the United States 1789-1945: A Supplement to the Statistical Abstract of the United States / Prepared by the Bureau of the Census with the Cooperation of the Social Science Research Council, 1949. U.S. Gov. Print. Off., 1949.