TY - GEN digital ID - 139559473 TI - A letter to M Jean-Baptiste Say : on the comparative expense of free and slave labour AU - Hodgson, Adam AU - Say, Jean-Baptiste AU - Gale Cengage Learning PY - 1823 PB - Liverpool Hatchard and Son DB - UniCat KW - Slave labor -- Economic aspects KW - Slavery -- United States KW - Slavery -- West Indies, British KW - Say UR - https://www.unicat.be/uniCat?func=search&query=sysid:139559473 AB - ER -