1816-8949
1816-8949
S1816-89492018000100075
10.18004/anales/2018.051(01)75-084
Paraguay
00
04
2018
00
04
2018
51
1
75
84
[
2007
24
2
2
109-15
]
[
2011
14
25
25
547-59
]
[
2000
24
3
3
123-35
]
[
2008
19
3
3
295-320
]
[
2009
8
2
2
63-71
]
[
2003
50
230-6
]
[
2000
7
465-76
]
[
2000
]
[
1989
]
[
1966
2da Edición
]
[
2005
9
2
2
129-36
]
[
2013
41
2
2
132-8
]
[
2016
13 ed.
]
[
2001
8
194-211
]
[
2007
14
8
8
]
[
2009
45
1
1
30-5
]
[
2007
29
3
3
]
[
2002
54
4
4
437-43
]
[
2008
1 ed
]
[
2008
31
1
1
246-51
]
[
2008
60
1
1
79-85
]
[
2004
46
3
3
]
[
1996
68
1
1
]
[
2010
34
4
4
256-67
]
[
2000
]
[
2011
47
5
5
252 261
]
[
2014
]
[
2001
37
5
5
227-34
]
[
2013
1
3
3
105-7
]
[
2008
5ta
]
[
2015
93
8
8
509- 515
]