1816-8949
1816-8949
S1816-89492018000300089
10.18004/anales/2018.051(03)89-092
Paraguay
Paraguay
00
12
2018
00
12
2018
51
3
89
92
[
2003
]
[
2001
71
448-5
]
[
2001
27
187-9
]
[
2008
36
449-51
]
[
1999
68
1053-7
]
[
2000
122
31-8
]
[
2011
58
150-1
]
[
2011
41
1639-43
]
[
2007
45
610-3
]
[
2000
53
484-7
]
[
2013
66
390-6
]
[
2006
61
1
1
57-62
]