RESPONSE SURFACE METHODOLOGY VIA DESIRABILITY FUNCTION TECHNIQUES FOR OPTIMIZING CORRELATED RESPONSES OF ELECTRICAL CONDUCTIVITY AND TOTAL DISSOLVED SOLIDS OF SELECTED BOREHOLE WATER. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 4, n. 3, p. 333–342, 2020. DOI: 10.33003/fjs-2020-0403-236. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/236. Acesso em: 2 sep. 2025.