TY - BOOK AU - Fogel, R. W. AU - Engerman, S. L. ED - International congress of economic history TI - ˆThe ‰relative efficiency of slavery: a comparison of Northern and Southern agriculture in the United States during 1860 PY - 1970///] CY - [М. KW - Рабский труд в сельском хозяйстве KW - Соединенные Штаты KW - nlr_sh1 KW - Э5-1150 KW - rubbk ER -