0872-1904
0872-1904
S0872-19042021000200105
10.4152/pea.202102105
Nigeria
00
03
2021
00
03
2021
39
2
105
128
[
2007
54
4
4
219-24
]
[
2008
2
11
11
107-15
]
[
2015
76
13
13
7-14
]
[
2010
11
2473-98
]
[
2009
250
225-36
]
[
2005
34
6
6
321-6
]
[
2010
349
283-92
]
[
2006
99
3
3
441-6
]
[
2012
]
[
2009
2
2
2
111-9
]
[
2011
]
[
2008
330
207-12
]
[
2014
5
1
1
237-44
]
[
2007
36
3
3
134-40
]
[
2011
5
9
9
641
]
[
2014
30
2
2
541-52
]
[
2009
2
2
2
111-9
]
[
2009
54
4089
]
[
2008
31
1
1
37-41
]
[
2002
7
]
[
2013
10
12
12
21-34
]
[
2012
2
3
3
127-42
]
[
2010
11
455-61
]
[
2010
39
2
2
77-83
]
[
2010
39
5
5
288-95
]
[
2013
2
1742-8
]
[
2010
52
198-204
]
[
2014
7
1
1
105-15
]
[
2010
1
2
2
101-10
]
[
2009
27
5
5
579-89
]
[
2009
2
4
4
223-31
]
[
2009
]
[
2004
83
129-34
]
[
2009
6
3
3
785-95
]
[
2018
36
4
4
231-47
]