00545nam a2200169Ia 4500001001100000005001700011008004100028043001200069050001700081090002200098245008600120260003800206300003100244504003200275650005300307999001500360000000566520251012174442.0  731212s1967    nyua     b    000 0 eng  an-us---00aHC110.A4bR500a338.4/7/62853097310aEconomic costs of air pollution;bstudies in measurementc[by] Ronald G. Ridker.   aNew York,bF. A. Praegerc[1967]   axiii, 214 pbillusc25 cm.  aBibliographical footnotes.  0aAirxPollutionxEconomic aspectszUnited States.  c3708d3708