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2Result(s)for '"Okpara D. A."'
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By Okpara D. A. Okon O. E. Ekeleme F. in Journal of Plant Nutrition
ISSN:0190-4167|32|5|878-891
Taylor & Francis Ltd(2009)
Access to resources Favorite 1.7828978
By Ojikpong T. O. Okpara D. A. Muoneke C. O. in Journal of Plant Nutrition
ISSN:0190-4167|32|3|367-381
Taylor & Francis Ltd(2009)
Access to resources Favorite 1.7828978