00239nam a22000977a 4500020001800000082001000018100001900028245002100047260005500068300001800123  a9789966463661  a808.1  aMAZRUI, Alamin  aChembe Cha Moyo/  aNairobi:bEast Africa Education Publishers,c1988.  ai-xi, 1-76 p.