2223-4861 2223-4861 S2223-48612019000400028 Cuba Cuba Cuba 00 12 2019 00 12 2019 46 4 28 38

American Public Health Association, American Water Works Association, Water Environment Federation Standard 1995 19th 301-421 2006 368-404- 429 1997 32-5 2011 5 3 3 1-16 Chemical Engineering 2018 159-60 1987 II 570-603- 609 Grupo del Banco Mundial 2007 10-2 2007 8-15 1997 30-2 2015 25 1 1 27-9 2018 7-8 1991 805-21 2015 36 1 1 29-34 2006 Segunda 98-105