Adenegan, K.O.Oladele, O.I.2018-10-162018-10-1620021-57808-257-9ui_inbk_adenegan_resource_2002http://ir.library.ui.edu.ng/handle/123456789/2498enResource use efficiency of cochorus, celosia and amaranthus among farmers in Oyo State, NigeriaBook chapter