TY  - BOOK
AU  - Fogel,Robert William
AU  - Engerman,Stanley L
TI  - Time on the cross: evidence and methods - a supplement
PY  - 1974///
CY  - Boston
PB  - Little Brown & Co.
KW  - Slavery
KW  - United States
KW  - Economic aspects
N1  - v.1 The economics of American Negro slavery.--v.2 Evidence and methods--a supplement
ER  -