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DOI:
10.9734/ajess/2022/v27i230649
Page: 1-9
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DOI:
10.9734/ajess/2022/v27i230653
Page: 40-46
Frengki Napitupulu
DOI:
10.9734/ajess/2022/v27i230650
Page: 10-18
Xiaotong Zhang, Zezhong Yang
DOI:
10.9734/ajess/2022/v27i230651
Page: 19-26
Yanyun Meng, Zezhong Yang
DOI:
10.9734/ajess/2022/v27i230652
Page: 27-39