| http://www.w3.org/ns/prov#value | - Readers who already own the first edition may find that the changes made for the second edition do not justify its purchase, particularly if their interests are tangential to the topic of plant nutrition and they have only occasional recourse to a reference such as this. ??? Daniel Taub, Department of Ecology and Evolution, State University of New York, Stony Brook, NY 11794 Plant Hormones: Physio
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