TY  - BOOK
AU  - Trachtenberg,Alexander
TI  - History of May Day
U1  - 331.81 
PY  - 1947///
CY  - New York
PB  - International Publisher
KW  - Working class
KW  - Collective bargaining
KW  - Laber time
KW  - International labor activities
KW  - Labor day
KW  - May day
KW  - Hours of labor
ER  -