0379-3982
0379-3982
S0379-39822019000200146
10.18845/tm.v32i2.4356
Ecuador
Ecuador
Ecuador
Ecuador
Cuba
00
06
2019
00
06
2019
32
2
146
164
[
1991
23
39-42
]
[
1986
151-6
]
[
2011
]
[
2000
]
[
2000
]
[
2010
216
1660-72
]
[
2010
2
270-91
]
[
2014
155
194-203
]
[
2004
104
309-21
]
[
2005
20
739-62
]
[
1995
33
1027-48
]
[
1977
15
553-64
]
[
2018
1-20
]
[
2017
54
313-21
]
[
2016
27
31-51
]
[
2012
29
1250025
]
[
2017
55
491-502
]
[
2014
25
401-13
]
[
2018
1-18
]
[
2018
319
369-86
]
[
2013
1082-8
]
[
2016
]
[
2017
194
3-12
]
[
2017
188
116-27
]
[
2011
]
[
1995
]
[
2008
]
[
1981
]
[
2017
]
[
2017
]