2414-8938
2414-8938
S2414-89382018000100053
10.30545/academo.2018.ene-jun.6
Ecuador
Ecuador
00
06
2018
00
06
2018
5
1
53
60
[
2011
5
1
1
43-63
]
[
DIPEC
2002
3
2
2
71-81
]
[
1970
]
[
2002
5 ed
]
[
2015
15
26
26
70-8
]
[
2008
]
[
2013
26
17
17
13-26
]
[
2010
60
2
2
115-52
]
[
2011
15
3
3
]
[
2015
41
3
3
]
[
2015
19
59-96
]
[
2015
41
02
02
427-42
]
[
2012
]