RT Article T1 Slavery as progress: Pagan and christian views of slavery as moral training JF International sociology VO 10 IS 2 SP 219 OP 234 A1 Kyrtatas, Dēmētrēs I. 1952- LA English YR 1995 UL https://krimdok.uni-tuebingen.de/Record/1639625925 K1 Sklaverei