0034-7744
0034-7744
S0034-77442015000500299
10.15517/rbt.v63i1.23109
Costa Rica
Costa Rica
00
04
2015
00
04
2015
63
299
306
[
2010
9
2
2
185-94
]
[
2010
58
1
1
399-412
]
[
2007
16
5183-92
]
[
2007
84
1
1
41-6
]
[
1997
51
1219-34
]
[
2002
36
565-70
]
[
2001
60
299-308
]
[
2000
]
[
2006
3
109-16
]
[
2006
30
4
4
99-102
]
[
2001
215
275-82
]
[
2009
28
577
]
[
2009
7
39-53
]
[
2007
84
1
1
132-5
]
[
2013
96
6
6
779-95
]
[
2012
458
199-211
]
[
2010
113
199-212
]
[
2005
]
[
2007
Ciudad Guayana, Venezuela
]
[
2011
6
4
4
1-8
]
[
2006
52
2
2
95-103
]
[
2010
8
145-50
]
[
2013
8
3)-1-10
]
[
2002
100
90-105
]
[
2009
43
4
4
591-8
]
[
2007
80
465-72
]
[
1986
66
1-19
]
[
1998
46
6
6
111-24
]
[
2007
84
4-9
]
[
2006
54
1
1
147-70
]
[
2006
40
3
3
337-342.
]
[
1998
46
6
6
125-35
]
[
1996
44
3
3
135-55
]