TY - CHAP A1 - Wahl, J.B. T1 - Trading quantity for quality: explaining the decline in American fertility in the nineteenth century Y1 - 1992 A3 - Goldin, C. A3 - Rockoff, H. T2 - Strategic factors in nineteenth century American economic history: a volume to honor Robert W. Fogel CY - Chicago PB - The University of Chicago Press SP - 357 EP - -397 ER -