Mother tongue of the foreign born : selected characteristics of foreign born by language spoken before coming to U.S
著者
書誌事項
Mother tongue of the foreign born : selected characteristics of foreign born by language spoken before coming to U.S
（U.S. census of population, 1960, v. 2 . Subject reports ; PC(2)-1E）
U.S. Dept. of Commerce, Bureau of the Census : U.S. G.P.O., 1966