2393-6606
2393-6606
S2393-66062019000200005
10.22235/ech.v8i2.1843
Costa Rica
00
12
2019
00
12
2019
8
2
5
21
[
2007
]
[
2005
]
[
2014
32
1
1
65-74
]
[
2010
]
[
2008
]
[
2012
]
[
2006
]
[
2008
]
[
2007
]
[
2001
]
[
2000
]
[
2009
]
[
2008
]
[
2006
37
1
1
31-46
]
[
2007
]
[
2008
]
[
2007
]
[
2004
]
[
2011
]
[
1990
]
[
2016
13
1
1
120-40
]