1405-3195
1405-3195
S1405-31952007000400435
Venezuela
Spain
Spain
00
06
2007
00
06
2007
41
4
435
446
[
2003
54
385
385
1221-9
]
[
2001
40
4
4
225-8
]
[
2004
630
147-58
]
[
1977
50
3-19
]
[
1979
16
863-77
]
[
1996
427
311-7
]
[
1990
30
255-60
]
[
2001
880
]
[
1986
26
511-6
]
[
2002
1172
]
[
2000
35
1051-8
]
[
2000
537
199-206
]
[
2004
646
47-54
]
[
2001
7
12-8
]
[
1990
281-322
]
[
1995
495
]
[
2005
130
3
3
469-77
]
[
1997
3
95-8
]
[
1996
46
4
4
371-93
]
[
1996
427
233-40
]
[
2003
128
2
2
269-76
]
[
1985
35
1
1
5-20
]
[
2006
23
4
4
453-63
]
[
1998
A-2
]
[
2004
664
567-73
]
[
2004
43
1
1
1-6
]
[
1965
148
339-45
]
[
1992
27-51
]
[
2000
526
115-36
]
[
2001
9
]
[
1998
10
3
3
76-9
]
[
2004
658
29-41
]
[
1985
164
540-9
]
[
2004
646
187-93
]