by Okonkwo, C.A.C.
Published in Crop protection (1989)

by Mensah, G.W.K. (University of Development Studies, Tamale (Ghana). Faculty of Agriculture), Okonkwo, C.A.C. (Abubakar Tafawa Balewa University, Bauchi (Nigeria). School of Agriculture)
Published in Annals of Plant Protection Sciences (01.03.2000)

by Tenebe, V.A, Pal, U.R, Okonkwo, C.A.C, Auwalu, B.M. (Abubakar Tafawa Balewa Univ., Bauchi (Nigeria). School of Agriculture)
Published in Journal of agronomy and crop science (1986) (01.11.1996)

by Okonkwo, C.A.C
Published in The Journal of horticultural science (01.01.1987)

by Okonkwo, C.A.C, Kilishi, N.A. (Crop Production Programme, Abubakar Tafawa Balwa University, Bauchi (Nigeria))
Published in Plant Varieties and Seeds (United Kingdom) (1990)