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For incorporation with a general review of literature covering potato investigations reported in 1934
Division of Soil Fertility Investigations
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Brown, B.E. Potato soil fertility and fertilizer literature for 1934. American Potato Journal 12, 254–257 (1935). https://doi.org/10.1007/BF02884321
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DOI: https://doi.org/10.1007/BF02884321