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The NPK nutrition and moisture relation studies and their effects on quality of Virginia tobacco [microform]
Cyhoeddwyd 1980Visual Material -
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The effects of N, K, and CA on the growth yield and quality fo snap cowpea [microform].
Cyhoeddwyd 1977Visual Material -
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Effects of different light intensities, nitrogen levels and population densities on grain sorghum [microform].
Cyhoeddwyd 1977Visual Material -
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