1816-8949
1816-8949
S1816-89492017000300063
10.18004/anales/2017.050(03)63-074
Paraguay
00
12
2017
00
12
2017
50
3
63
74
[
1985
]
[
1980
6ta ed
1050-3
]
[
2009
,
23
1
1
1-17
]
[
2017
20
1
1
0
]
[
2002
31
3
3
]
[
2005
4
487-97
]
[
2010
24
1
1
]
[
2017
]
[
2017
]
[
2017
]
[
2014
9ª Edición
]
[
2009
]
[
2017
82
2
2
136-40
]
[
2016
]
[
2011
]
[
2016
]
[
2004
vol. 4
13
13
18-34
]