[1]
Cristobal Coaguila Berly David and Barriga Paria Christ Jesus, “Optimization of the Health and Safety Protocol for Covid-19 through the use of the QR Code in the Tailing Disposal System Project, Quellaveco - Moquegua, 2020”, int. j. eng. mgmt. res., vol. 11, no. 5, pp. 129–142, Oct. 2021.