2177-6059
2177-6059
S2177-60592017000300497
10.18593/r.v42i3.14215
South Africa
Zimbabwe
Brazil
00
12
2017
00
12
2017
42
3
497
522
[
210
151-66
]
[
81
2
2
132-69
]
[
39
1
1
60-72
]
[
7
2
2
277-300
]
[
6
4
4
350-72
]
[
14
3
3
110-20
]
[
18
3
3
264-75
]
[
1
1
1
2-11
]
[
14
1-2
1-2
23-39
]
[
14
1
1
133-56
]
[
5
1
1
1-24
]
[
9
1
1
55-66
]
[
15
7-8
7-8
345-51
]
[
77
2
2
86-232
]
[
15
3
3
234-57
]
[
9
2
2
81-93
]
[
10
1
1
1-12
]
[
35
5
5
601-17
]
[
41
4
4
495-511
]