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ArchiveVolume 8, Issue 3, May 2020
Galina Ustinova, Victor Alexeev
Pages: 29-39     Published Online: Jun. 9, 2020
DOI: 10.11648/j.ajpa.20200803.11        Views 309      Downloads 108
Yun-Sok Shin
Pages: 40-45     Published Online: Jun. 15, 2020
DOI: 10.11648/j.ajpa.20200803.12        Views 299      Downloads 111
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