00270nam a2200109Ia 4500082002100000100002800021245003500049260004300084300002300127500000500150700000500155  a330.155bP359.VS  aPearce, David W. d ed.  aThe valuation of social costb  aLondonbGeorge Allen & Unwin Ltdc1978  aviii, 197p. Index.  a  a