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Winifred E. Brenchley, Katherine Warington, The Weed Seed Population of Arable Soil: II. Influence of Crop, Soil and Methods of Cultivation Upon the Relative Abundance of Viable Seeds, Journal of Ecology, Vol. 21, No. 1 (Feb., 1933), pp. 103-127
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Brenchley et al. (1933) studied this question.
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