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Citation
Kick, Von H., H. Burger, and K. Sommer. 1980. “Total Contents of Pb, Zn, Sn, As, Cd, Hg, Cu, Cr, and Co in Agricultural and Horticultural Soils of Nordhein-Westfalen.” Special Collections, USDA National Agricultural Library. Accessed August 28, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/5467.