DETERMINATION OF HEAD FOR SMALL HYDROPOWER DEVELOPMENT: A CASE STUDY OF RIVER ETHIOPE AT UMUTU. Nigerian Journal of Technology, [S. l.], v. 35, n. 1, p. 190–195, 2015. DOI: 10.4314/njt.351.1065. Disponível em: https://nijotech.com/index.php/nijotech/article/view/1065. Acesso em: 16 apr. 2026.