Vials containing samples of soils from various geographic regions of the U.S.

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

Citation

Unknown. “Vials containing samples of soils from various geographic regions of the U.S..” Special Collections, USDA National Agricultural Library. Accessed November 30, 2022, https://www.nal.usda.gov/exhibits/speccoll/items/show/8331.