2007-0934
2007-0934
S2007-09342016000400923
México
Mexico
México
Ecuador
México
00
06
2016
00
06
2016
7
4
923
934
[
1980
]
[
1997
43
2
2
103-21
]
[
2000
32
4
4
265-72
]
[
1988
175-9
]
[
1994
]
[
1998
]
[
2000
57-8
]
[
INEGI
2013
]
[
2003
]
[
1996
1
67-72
]
[
2015
166
2
2
72-83
]
[
1981
27
1
1
8-14
]
[
2004
44
1
1
65-74
]
[
2003
189
5
5
323-32
]
[
SAS Institute
2001
]
[
SEMARNAT
1999
]
[
1988
Tercera
]
[
2000
]