1657-0308
1657-0308
S1657-03082018000200010
10.14718/revarq.2018.20.2.1562
Ecuador
00
12
2018
00
12
2018
20
2
10
19
[
2016
26
1
1
9-22
]
[
2002
]
[
2009
50
2
2
213-33
]
[
2011
25
25
93-116
]
[
2011
3
3
65-104
]
[
2012
34
34
26-49
]
[
2015
]
[
1974
]
[
1990
9
1
1
1-9
]
[
2016
32
155-67
]
[
2005
]
[
2006
]
[
Google Maps
2017
]
[
2012
35
664-74
]
[
1992
]
[
2015
201
201
360-7
]
[
2008
84
84
7-19
]
[
2000
]
[
2012
106
106
221-9
]
[
1974
]
[
2005
]
[
1980
39
6
6
1161-78
]
[
2005
122
122
]
[
2014
40
121
121
55-74
]