Study the Characterization of Adding Polymer-Surfactant Agent on the Drag Reduction Phenomena in Pipeline Flow System. Al-Khwarizmi Engineering Journal, [S. l.], v. 13, n. 2, 2017. DOI: 10.22153/kej.2017.12.004. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/352.. Acesso em: 2 may. 2024.