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- Munsell Soil-Color Charts, 2021 -
- 2021
- Collections - Artifact
Munsell Soil-Color Charts, 2021
- "The Oliver Plow Book, a Treatise on Plows and Plowing," 1920 -
- 1920
- Collections - Artifact
"The Oliver Plow Book, a Treatise on Plows and Plowing," 1920