Não informado. (2001). Annual Report on the Department of Agricultural Research, Federation of Nigeria. Federation of Nigeria, Department of Agriculture.
Chicago-viite (17. p.)Não informado. Annual Report on the Department of Agricultural Research, Federation of Nigeria. Lagos: Federation of Nigeria, Department of Agriculture, 2001.
MLA-viite (8. p.)Não informado. Annual Report on the Department of Agricultural Research, Federation of Nigeria. Federation of Nigeria, Department of Agriculture, 2001.
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