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Citation
Zimmerman, P. W. and A. E. Hitchcock. 1942. “Substituted Phenoxy and Benzoic Acid Growth Substances and the Relation of Structure to Physiological Activity.” Special Collections, USDA National Agricultural Library. Accessed September 22, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/4551.
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