00339cam a22001097a 4500008004000000082001500040100001700055245008900072260003200161300001000193650002600203180718b1977   xxu||||| |||| 00| 0 eng d  aR8x54 Se55  aSen, Sukomal  aWorking class of India: history of emergence and movement, 1830-1970cby Sukomal Sen  aCalcuttabK.P. Bagchic1977  a466p.  aLabour unions - India