TY - CHAP A1 - Preston, S.H. T1 - Causes and consequences of mortality declines in less developed countries during the twentieth century Y1 - 1980 A3 - Easterlin, R.A. T2 - Population and Economic Change in Developing Countries CY - Chicago, IL PB - University of Chicago Press for National Bureau of Economic Research SP - 289 EP - -360 ER -