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T. Honkanen, E. Haukioja, J. Suomela, Effects of Simulated Defoliation and Debudding on Needle and Shoot Growth in Scots Pine (Pinus sylvestris): Implications of Plant Source/Sink Relationships for Plant-Herbivore Studies, Functional Ecology, Vol. 8, No. 5 (Oct., 1994), pp. 631-639
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Honkanen et al. (1994) studied this question.
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