https://www.usgs.gov/centers/nmic/phosphate-rock-statistics-and-information, (n.d.).## phosphoric-acid-chemical-economics-handbook, Www.Ihsmarkit.Com. (2016).## https://www.openpr.com/, (n.d.).## https://www.marketresearchfuture.com/reports/phosphate-market-1921, (n.d.).## https://www.nipna.ir/, (n.d.).## www.fao.org, (n.d.).##www.smtnews.ir/mine/, (n.d.).## B.V. Salas, M.S. Wiener, J.R.S. Martinez, and Phosphoric Acid Industry: Problems and Solutions, in: Phosphoric Acid Ind. Probl. Solut. 2017.## P. Becker, phosphats and phosphoric acid, Fertil. Sci. Technol. Ser. 6 (1989).## B.V. Salas, M.S. Wiener, J.R.S. Martinez, and Phosphoric Acid Industry: Problems and Solutions, in: Chapter 4, 2010: pp. 141–157.## Member companies of The, E.F.M.A. (EFMA), Production of Phosphoric Acid, in: 2000: pp. 14–22.