?FLOTATION CHARACTERISTICS OF LEAD-ZINC ORE FROM BESHAM, DISTRICT SWAT, NWFP, PAKISTAN. Biological Sciences - PJSIR, [S. l.], v. 43, n. 5, p. 319–323, 2000. Disponível em: http://www.v2.pjsir.org/index.php/biological-sciences/article/view/2059. Acesso em: 25 apr. 2026.