By Singh A.   Carsky R.J.   Lucas E.O.   Dashiell K.   in Agriculture, Ecosystems & Environment

ISSN:0167-8809|100|2|231-240

Elsevier‎(2003)‎

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By Akintoye H.A.   Kling J.G.   Lucas E.O.   in Field Crops Research

ISSN:0378-4290|60|3|189-199

Elsevier‎(1999)‎

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