2588-0934
2588-0934
S2588-09342020000200049
10.37785/nw.v4n2.a3
Ecuador
Ecuador
00
12
2020
00
12
2020
4
2
49
67
[
2016
]
[
2015
]
[
1982
]
[
2014
1
1
]
[
2019
]
[
2019
]
[
2011
]
[
2019
]
[
2019
]
[
2019
]
[
2016
32
32
]
[
2012
179-93
]
[
2011
24
173-200
]
[
2000
]
[
2013
109
109
]
[
2003
12
629-48
]
[
2019
]
[
1998
]
[
2007
]
[
2003
19
19
]
[
2003
]