1870-199X
1870-199X
S1870-199X2007000400185
Mexico
Mexico
00
00
2007
00
00
2007
11
4
185
200
[
1990
322
373-6
]
[
1987
66
2-9
]
[
1991
18
421-6
]
[
1992
149
1470-5
]
[
1993
10
257-65
]
[
1996
23
572-81
]
[
1995
22
153-61
]
[
1992
63
237-42
]
[
1986
1
65-70
]
[
1993
64
474-84
]
[
1993
28
500-10
]
[
1998
9
3
3
248-66
]
[
1994
5
112-41
]
[
1997
14
112-43
]
[
1998
77
16-26
]
[
2001
125
134-41
]
[
1994
5
517-31
]
[
1996
1
821-78
]
[
1996
21
101-12
]
[
1992
352-62
]
[
1984
6
51-95
]
[
1991
77
1627-52
]
[
1988
2
108-15
]
[
1989
44
153-205
]
[
1994
8
1314-25
]
[
1974
139
1369-81
]
[
1987
138
3403-7
]
[
1988
263
9437-42
]
[
1994
65
5-423-428
]
[
2002
20
S14-S-20
]
[
1987
262
16275-8
]
[
1989
143
3235-40
]
[
1987
139
1541-5
]
[
1991
266
10331-6
]
[
1994
15
1557-65
]
[
1991
59
11
11
4271-4
]
[
2000
2
1181-92
]
[
1998
160
403-9
]
[
1998
139
1338-54
]
[
1989
24
362-7
]
[
1990
26
156.163
]
[
1991
18
548-54
]
[
1990
35
431-4
]
[
1994
65
147-53
]
[
1996
87-102
]
[
1996
687-700
]
[
1999
155
2145-52
]
[
2000
14
216-48
]
[
1998
62
504-9
]
[
1998
186
281-186
]
[
1997
12
336.344
]
[
1974
45
641-3
]
[
1996
10
1076-49
]
[
1994
40
8-12
]
[
1999
70
7
7
757-60
]
[
1992
19
53-7
]
[
1993
38
55-60
]
[
1993
20
514-9
]
[
1993
20
225-31
]
[
1994
29
54-61
]
[
1994
93
99-103
]
[
1994
65
423-8
]
[
1995
40
46-9
]
[
1995
22
885-90
]
[
1995
66
852-9
]
[
1995
22
162-7
]
[
1996
8
161-7
]
[
1996
67
755-62
]
[
1997
32
524-9
]
[
1998
106
778-87
]
[
1999
70
567-73
]
[
1999
44
535-9
]
[
1999
70
1457-63
]
[
2000
17
20-31
]
[
2000
71
1535-45
]
[
2000
18
201-7
]
[
2000
27
738-43
]
[
2000
27
41-52
]
[
2001
28
840
]
[
2002
29
48-53
]
[
2003
30
1046
]
[
2003
38
247
]
[
2004
32
511-20
]
[
2004
31
475-82
]
[
2004
39
158-67
]
[
2004
35
683-6
]
[
2006
21
256-60
]
[
2006
77
1025-31
]
[
1997
24
72-7
]
[
1994
19
382-4
]
[
1998
25
781-5
]
[
1995
105
453
]
[
1993
28
543-6
]
[
1995
66
852-9
]
[
1989
24
362-7
]
[
1988
27
705-16
]
[
1990
26
207-14
]
[
1995
66
139-44
]
[
1995
46
1-12
]
[
1992
22
396-402
]
[
1999
70
7
7
724-9
]
[
2005
76
234-43
]
[
2005
40
306-11
]
[
2006
30
17-23
]
[
2005
29
11-6
]
[
1998
62
812-21
]