TY - BOOK AU - Caballero,Ricardo J. AU - Hammour,Mohamad L. TI - Improper churn : social costs and macroeconomic consequences AV - HB3743 C322I PY - 1998/// CY - Cambridge, Mass. PB - National Bureau of Economic Research KW - BUSINESS CYCLES KW - UNITED STATES KW - ECONOMETRIC MODELS KW - LABOR MARKET KW - INDUSTRIAL PRODUCTIVITY KW - ECONOMICS KW - RESEARCH ER -