American imports /
Humphrey, Don Dougan, 1908-
American imports / Don Dougan Humphrey. - New York : Twentieth Century Fund, 1955. - xviii, 546 p. : ill. ; 24 cm.
Includes index.
Tariff--United States.
United States--Commerce.
382 / HUA 1955
American imports / Don Dougan Humphrey. - New York : Twentieth Century Fund, 1955. - xviii, 546 p. : ill. ; 24 cm.
Includes index.
Tariff--United States.
United States--Commerce.
382 / HUA 1955