DEVELOPMENT OF U-CHANNEL SCREW JACK FOR VEGETABLE OIL EXTRACTION. Nigerian Journal of Technology, [S. l.], v. 36, n. 3, p. 979–986, 2017. DOI: 10.4314/njt.363.1417. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/1417. Acesso em: 23 apr. 2026.