Parasite stocks used for East Coast Fever immunization in Kenya - Mutugi, J.J.M.; Young, A.S.; Maritim, A.C.; Ndungu, S.G.; Linyonyi, A.; Ngumi, P.N.; Mining, S.K.; Leitch, B.L.; Stagg, D.A.; Grootenhuis, J.G.; Kariuki, D.P.; Morzaria, S.P.; et al. (International Laboratory for Research on Animal Diseases, 1989)