00355 a2200109 450000500170000002000180001708200210003510000130005624500520006926000450012130000790016620250612122220.0 a0-8018-3069-9 aLECT 658.155 RAY aRAY, A.  aCost-Benefit Analysis: Issues and methodologies aWashington, bInternational bank,c1984. avii, 158.: ill.; chart, figure, graph, table. bIndex, reference, c24cm.