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Cooperative agreement between Hayes B. Raffensperger, Swift and Company, and Vocational agriculture students for controlling swine parasites

Citation

Hayes B. Raffensperger. “Cooperative agreement between Hayes B. Raffensperger, Swift and Company, and Vocational agriculture students for controlling swine parasites.” Special Collections, USDA National Agricultural Library. Accessed September 25, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/7805.