2215-2644
2215-2644
S2215-26442018000200038
10.15517/revedu.v42i2.27131
Costa Rica
00
12
2018
00
12
2018
42
2
794
827
[
2006
315-44
]
[
1968
]
[
2010
3
]
[
2007
33
1
1
103-20
]
[
2009
14
5
5
267-74
]
[
2006
18
18
802-8
]
[
2002
2
]
[
1985
197-221
]
[
1998
36
88-89
88-89
419-28
]
[
1996
]
[
2000
40
3
3
351-72
]
[
2015
6
]
[
2006
375-95
]
[
1985
125-44
]
[
2006
25
1
1
123-35
]
[
1981
68
3
3
55-60
]