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Citation
Challenger, Frederick and Constance Higginbottom. 1935. “The Production of Trimethyl-arsine by Penicillium brevicaule (Scopulariopsis brevicaulis)..” Special Collections, USDA National Agricultural Library. Accessed September 23, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/5277.
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