00558cam a22001692  4500001001100000005001700011008004100028020001600069040001500085050001700100245013700117260002600254300001100280650003100291700003100322700003500353000000212920151217155815.0070403s        xx            000 0 eng d  a19215639X :  aKABUcKABU 0aHF3876b.P7410aPre-colonial African trade :bessays on trade in Central and Eastern Africa before 1900 /ced. by Richard Gray and David Birmingham.  aLondon :bOUP,c1970.  a308 p. 0aTradezAfrica.@00001513761 aGray, Richard.@00001513771 aBirmingham, David.@0000151378