00348nam a2200133Ia 4500008004100000082002000041245003100061245002000092250002000112260003400132260000900166300001500175526002400190250428s9999    xx            000 0 und d  a331.1 C66l 1966 0aLabor in the United States 0cCohen, Sanford.  aSecond edition.  bCharles E Merrill Books, Inc.  c1966  a640 pages.  a300 Social Sciences