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Mast, S.O., Hulpieu, H.R. Variation in the response to light in Amoeba proteus with special reference to the effects of salts and hydrogen-ion concentration. Protoplasma 11, 412–431 (1930). https://doi.org/10.1007/BF01614350
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DOI: https://doi.org/10.1007/BF01614350