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Weber, G. ,  Elemo, K. ,  Lagoke, S.T.O. ,  [Weeds in intensive cerealbased cropping systems of the Northern Guinea Savanna: RCMP Research monograph, No. 20] ,  Weeds in intensive cerealbased cropping systems of the Northern Guinea Savanna: RCMP Research monograph, No. 20

Okocha, P. ,  Ukwungwu, M.N. ,  Joshi, R. ,  [Field varietal screening against African rice gall midge: IITA research guide, No. 34] ,  Field varietal screening against African rice gall midge: IITA research guide, No. 34

Lawani, S.M. ,  [Dealing with the issues of our times] ,  Dealing with the issues of our times

International Institute of Tropical Agriculture ,  [IITA Annual Report 1999] ,  IITA Annual Report 1999