Córdova Procel, Juan, Gloria Elizabeth Miño Cascante, Blanca Irene Vargas Guambo, & Paúl Oswaldo Vega Cortez. " CALCULATION OF THE VARIABLE COST OF WELDING IN API TANK." mktDESCUBRE [Online], 1.2 (2020): 19 - 28. Web. 25 Nov. 2024