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  2020Volume 71Issue 2 Pages 1-11
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_1
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  2020Volume 71Issue 2 Pages 13-22
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_13
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  2020Volume 71Issue 2 Pages 23-32
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_23
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  2020Volume 71Issue 2 Pages 47-53
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_47
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• [title in Japanese]
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  2020Volume 71Issue 2 Pages 55-61
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_55
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  2020Volume 71Issue 2 Pages 63-64
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_63
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  2020Volume 71Issue 2 Pages 65-66
  Published: March 31, 2020
  Released on J-STAGE: May 29, 2024
  
  DOIhttps://doi.org/10.60296/jspu.71.2_65
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