RT Journal Article SR Electronic T1 “Slave Castles” and the Transatlantic Slave Trade JF Ghana Studies JO Gha Stu FD University of Wisconsin Press SP 59 OP 78 DO 10.3368/gs.7.1.59 VO 7 IS 1 A1 Osei-Tutu, Brempong YR 2004 UL https://gs.uwpress.org/gs.uwpress.org/content/7/1/59.abstract AB