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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
. 1917 Oct;3(10):602–609. doi: 10.1073/pnas.3.10.602

Proof of the Muscle Tension Theory of Heliotropism

Walter E Garrey 1,2
PMCID: PMC1091334  PMID: 16586759

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