RT Journal Article SR Electronic T1 Document 6: Memorandum No. 22 The Condition of Slaves and the Native Law Regarding Slavery in Northern Nigeria JF African Economic History JO Afr Eco His FD University of Wisconsin Press SP 177 OP 196 DO 10.3368/aeh.40.1.177 VO 40 IS 1 A1 Frederick D. Lugard YR 2012 UL https://aeh.uwpress.org/aeh.uwpress.org/content/40/1/177.abstract AB