1. Selecting maize (Zea mays L.) lines for developing varieties better adapted to small-farm environments;Ajala;J. Genet Breed.,1992
2. Selection in maize (Zea mays L) for resistance to the spotted stem borer (Chilo partellus (Swinhoe);Ajala;Maydica,1995
3. Bock , C. 1995 Studies of the epidemiology, variability and control of sorghum downy mildew ( Perenosclerospora sorghi (Weston and Uppal) C.G. Shaw) on sorghum and maize in Africa PhD Thesis University of Reading