Title: Percentage plans for restriction of immigration : hearings before the Committee on Immigration and Naturalization, House of Representatives, Sixty-sixth Congress, first session, June 12, 13, 14, 18, 19 and 20, and September 25, 1919.
Authors: United States.; Immigration Collection of Prescott Farnsworth Hall (Harvard College Library)
Publisher: G.P.O.,
Year: 1919
Subjects: United States Emigration and immigration.