1. Dry and wet seasonal studies on the grazing behaviour of native N'dama and imported Friesian bulls in a humid tropical environment;Alhassan;Appl. Anim. Behav. Sci.,1988
2. Agropastoral herding practices and grazing behaviour of cattle in the subhumid zone of Nigeria;Bayer;ILCA Bull.,1986
3. Effects of livestock-crop integration on grazing time of cattle in a subhumid African savanna;Bayer,1985
4. Resource use and strategies for development of pastoral systems in subhumid West Africa — the case of Nigeria;Bayer;Q. J. Int. Agric.,1987