00290nam a2200121Ia 4500082002200000100002700022245002800049260003300077300001000110490003800120500000500158700000500163  a338.5141bL426.CB  aLayard, Richard d ed.  aCost-benefit analysisb  aHarmondsworthbPenguinc1972  a496p.  aPenguin modern economics readings  a  a