Schlagwort(e): Slavery History ; Africans History ; Slaves History ; Agricultural laborers History ; Malaria Social aspects ; History ; Agriculture Health aspects ; History ; Agriculture Social aspects ; History ; Agriculture Environmental aspects ; History ; Oases History ; SOCIAL SCIENCE Slavery ; HISTORY General ; POLITICAL SCIENCE Public Policy ; Cultural Policy ; SOCIAL SCIENCE Anthropology ; Cultural ; SOCIAL SCIENCE Popular Culture ; Africans ; Agricultural laborers ; Agriculture Environmental aspects ; Agriculture Health aspects ; Agriculture Social aspects ; Ecology ; Malaria Social aspects ; Oases ; Slavery ; Slaves ; Arabian Peninsula Environmental conditions ; History ; History ; Electronic book ; Electronic book ; Electronic books