PRODUCTION AND COST OF COLD PATCH ROAD MATS WITH BITUMEN EXTRACTED FROM NIGERIAN TAR SAND. Nigerian Journal of Technology, [S. l.], v. 34, n. 2, p. 245–253, 2015. DOI: 10.4314/njt.342.926. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/926. Acesso em: 21 apr. 2026.