The geochemistry of gypsum occurrences in Nafada area, Northeastern Nigeria. Journal of Pure and Applied Sciences (Science Forum), [S. l.], v. 15, n. 1, p. 23–39, 2018. Disponível em: https://atbuscienceforum.com.ng/index.php/jpas/article/view/64. Acesso em: 14 dec. 2025.