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R. M. Bartlett, R. J. Reader, D. W. Larson, Multiple Controls of Cliff-Edge Distribution Patterns of Thuja Occidentalis and Acer Saccharum at The Stage of Seedling Recruitment, Journal of Ecology, Vol. 79, No. 1 (Mar., 1991), pp. 183-197
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Bartlett et al. (1991) studied this question.
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