Sanford Cohen. 4 0

Labor in the United States / 6 6 Sanford Cohen. - Second edition. - - 640 pages. - - - - - . - . - 0 . - . - 0 .







5

















5







2 = =







66-28641

2




2 --0------


6 --0-- 2 --------



0 2 --


--20------





Labor and laboring classes ------United States.----


--------20--


----2

/ 2

/ 2

/

/