Georgia. Department of Agriculture. "Commercial fertilizers inspected and analyzed in the state of Georgia, spring season 1928, by brands." University of Georgia. Map and Government Information Library. 1928-04, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-ba400-b-pb1-bno-p-b110.

Georgia. Department of Agriculture (1928-04). Commercial fertilizers inspected and analyzed in the state of Georgia, spring season 1928, by brands. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-ba400-b-pb1-bno-p-b110

Georgia. Department of Agriculture. "Commercial fertilizers inspected and analyzed in the state of Georgia, spring season 1928, by brands." 1928-04. October 14, 2026. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-ba400-b-pb1-bno-p-b110.