0256-7024
0256-7024
S0256-70242020000200040
10.15517/rgac.v63i0.43401
El Salvador
El Salvador
00
12
2020
00
12
2020
63
40
57
[
2007
]
[
2010
]
[
2018
]
[
2016
5
1
1
1-24
]
[
2016
]
[
2001
28
185-208
]
[
1995
]
[
2013
70
6
6
2587-602
]
[
2019
222
]
[
2018
]
[
2012
71
61-9
]
[
2001
]
[
1997
36
8
8
289-93
]
[
2009
]
[
2007
]
[
2018
234
27-37
]
[
2005
24
1293-306
]
[
2011
15
4
4
423-31
]
[
2019
]
[
2011
56
1
1
105-40
]
[
2002
Niagara Falls, Canadá
]
[
2012
5
5
5
1039-46
]
[
2010
]
[
2012
]
[
2017
76
14
14
]
[
2010
206
1-4
1-4
295-306
]
[
2018
56
9
9
1261-77
]
[
1997
88-112
]
[
2004
55-67
]
[
1975
13
207-28
]
[
2019
]
[
2015
79
137-50
]
[
2008
]
[
2013
27
14
14
4759-71
]