Paul H. Glaser, Gerald A. Wheeler, Eville Gorham, Herbert E. Wright, Jr., The Patterned Mires of the Red Lake Peatland, Northern Minnesota: Vegetation, Water Chemistry and Landforms, Journal of Ecology, Vol. 69, No. 2 (Jul., 1981), pp. 575-599
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Glaser et al. (1981) studied this question.
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