1816-8949
1816-8949
S1816-89492017000300055
10.18004/anales/2017.050(03)55-062
Paraguay
00
12
2017
00
12
2017
50
3
55
62
[
1897
39
49-84
]
[
1999
50
762-7
]
[
2004
39
133-4
]
[
2005
37
449-53
]
[
2007
99
505-10
]
[
1943
117
403-4
]
[
1979
190
183-8
]
[
2007
66
831-5
]
[
2009
69
6
6
987-96
]
[
2007
66
343-54
]
[
2004
59
2
2
267-79
]
[
2005
62
781-2
]
[
2009
23
7
7
1465-9
]
[
2008
22
9
9
748-52
]
[
2013
34
2
2
91-4
]
[
2003
Vol.XXXVI
1-2
1-2
21-42
]