Kanywanyi The duty to deliver the goods : payment and delivery concurret conditions: ED Kressman and Co. V. L. N. Lakhani Ltd. and others [1964] - Dar es Salaam : University of Dar es Salaam, 1961 - 8p. ; 33cm. - Paper; 27 . Subjects--Topical Terms: Duty, tax LC Class. No.: EAF FOL KRD.D26 No.27