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Valencia, F.J.E., Ibarra, J.C.R. and Moreno, V.M.D. 2019. Study to Determine Qualitative Characteristics in Customer Service Positions in Supermarkets (Super North Case). Journal of Applied Business and Economics. 21, 7 (Dec. 2019). DOI:https://doi.org/10.33423/jabe.v21i7.2553.