00340cam a22001097a 4500008004000000082001500040245005500055260002300110300000900133650004300142650004500185180718b1968   xxu||||| |||| 00| 0 eng d  aT19x42 Y82  aHalifax and Calder Valley : An area studycBy HMSO  aLondonbHMSOc1968  a145p  aHalifax (England) -- Social conditions  aHalifax (England) -- Economic conditions