Cattle diseases and trypanosomiasis in the Gambia. I. Clinical studies - Murray, M.; McIntyre, W.I.M.; Murray, P.K.; Urquhart, G.M.; Jennings, F.W.; Greig, A.J.; Clifford, D.J.; N'Dow, W.S.M.; Touray, B.N.; Sanyang, B.J.; Bray, R.S. (OAU/STRC, 1979)