Research note NE-(series). NE-157. Response of paper birch seedlings to nitrogen, phosphorus, and potassium [with list of references; by John C. Bjorkbom].
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Response of paper birch seedlings to nitrogen, phosphorus, and potassium [with list of references; by John C. Bjorkbom].
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Research note NE-(series). NE-157. Response of paper birch seedlings to nitrogen, phosphorus, and potassium [with list of references; by John C. Bjorkbom].