1816-8949
1816-8949
S1816-89492021000100137
10.18004/anales/2021.054.01.137
Paraguay
00
04
2021
00
04
2021
54
1
137
142
[
2017
]
[
1910
15
307
]
[
1913
60
973
]
[
1913
83
478
]
[
2001
42
S269
]
[
2000
41
2506-13
]
[
2008
34
350-4
]
[
2016
4
6
]
[
2017
]
[
1984
54
224-9
]
[
1978
131
872-80
]
[
2001
20
4
4
408-13
]
[
1993
19
142-5
]
[
2001
27
61-6
]
[
2005
8
944-56
]
[
2000
26
741-9
]
[
2000
26
741-9
]