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Slide of treating ear of infested pig

Image (illustration or photograph) for this item, linking to higher res image.

Citation

Animal and Plant Health Inspection Service, United States Department of Agriculture. “Slide of treating ear of infested pig.” Special Collections, USDA National Agricultural Library. Accessed November 8, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/7322.