International labour legislation / by H. J. W. Hetherington. Hetherington, H. J. W. (Hector James Wright), 1888- International Labour Office. International Labour Conference (1st : 1919 : Washington, D.C.) Labor laws and legislation. HD7809 .H5 331.026 HEI London : Methuen, [1920] [1920] 1920 Text xi, 194 p. eng