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What is an Essential Element? The number of elements considered essential for the growth of higher plants now varies from 16 to 20 or more, depending upon the definition of essentiality. The authors of this book are awar
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Document Date: 2004-10-13 11:41:34
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What is an Essential Element? The number of elements considered essential for the growth of higher plants now varies from 16 to 20 or more, depending upon the definition of essentiality. The authors of this book are awar