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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1915 Jan;1(1):44–47. doi: 10.1073/pnas.1.1.44

On the Identity of Heliotropism in Animals and Plants

Jacques Loeb 1, Hardolph Wasteneys 1
PMCID: PMC1090727  PMID: 16586584

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