1659-4266
1659-4266
S1659-42662018000200379
10.22458/urj.v10i2.2166
Nigeria
Nigeria
00
12
2018
00
12
2018
10
2
379
385
[
2008
45
21-8
]
[
2008
2
103-107.
]
[
2010
47
33-8
]
[
2003
20
1-7
]
[
2005
22
93-107
]
[
2015
12
540-5
]
[
2007
14
31-8
]
[
2005
99
525-31
]
[
1989
34
401-421.
]
[
2010
2,
73-8
]
[
2016
17
1-5
]
[
2017
4
119-25
]
[
1989
107
325-30
]
[
1986
2
18-28
]
[
1989
1
95-102
]
[
1998
15
136-43
]
[
2003
24,
184-90
]
[
2002
67
32-8
]
[
2008
2,
866-71
]
[
2005
42
43-53
]
[
2003
10
217-22
]
[
2010
1
49-53
]
[
2014
1
86-93
]
[
2016
5
146
146
]
[
(200
9
1,
13-7
]
[
2005
]
[
2005
4
4
4
]
[
1993
]
[
2006
1,
22-31
]
[
2003
4
522-4
]