National War Labor Board (8 apr 1917 anni – 31 magg 1919 anni)
Descrizione:
The National War Labor Board was an agency of the United States government established on April 8, 1918 to mediate labor disputes during World War I.Aggiunto al nastro di tempo:
Data:
8 apr 1917 anni
31 magg 1919 anni
~ 2 years