Kanywanyi Duties of the seller : implied condition applied by trade usage: Fleury and King V. Mohamed Walli and Co. and Juma Kemani - Dar es Salaam : University of Dar es Salaam, 1969 - 1p. ; 33cm. - Paper; 33 . Subjects--Topical Terms: Duty, tax LC Class. No.: EAF FOL KRD.D26 No.33