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INE (Spain). (June 24, 2020). Number of employees of the oil refining industry in Spain in 2017 and 2018 [Graph]. In Statista. Retrieved July 24, 2021, from https://www.statista.com/statistics/1197887/number-of-workers-in-the-oil-refining-sector-in-spain/
INE (Spain). "Number of employees of the oil refining industry in Spain in 2017 and 2018 ." Chart. June 24, 2020. Statista. Accessed July 24, 2021. https://www.statista.com/statistics/1197887/number-of-workers-in-the-oil-refining-sector-in-spain/
INE (Spain). (2020). Number of employees of the oil refining industry in Spain in 2017 and 2018 . Statista. Statista Inc.. Accessed: July 24, 2021. https://www.statista.com/statistics/1197887/number-of-workers-in-the-oil-refining-sector-in-spain/
INE (Spain). "Number of Employees of The Oil Refining Industry in Spain in 2017 and 2018 ." Statista, Statista Inc., 24 Jun 2020, https://www.statista.com/statistics/1197887/number-of-workers-in-the-oil-refining-sector-in-spain/
INE (Spain), Number of employees of the oil refining industry in Spain in 2017 and 2018 Statista, https://www.statista.com/statistics/1197887/number-of-workers-in-the-oil-refining-sector-in-spain/ (last visited July 24, 2021)
