López Cárcamo BR. Investigation case-2019: food safety vs. handling-training in shops of a public university of Guatemala. CCD [Internet]. 2022Nov.15 [cited 2025Sep.9];5(4.1):6-20. Available from: https://www.cienciadigital.org/revistacienciadigital2/index.php/ConcienciaDigital/article/view/2391