Establishment Survey Information

 Ha NoiHo Chi Minh cityDa NangCan ThoMekong Delta River
2017 Establishment Survey 2017 Establishment Survey 2017 Establishment Survey 2017 Establishment Survey 2017 Establishment Survey 2017
  Universe 2018 Universe 2018 Universe 2017/2018 Universe 2017/2018 Universe 2018
2016 Establishment Survey 2016 Establishment Survey 2016      
  Universe 2017 Universe 2017      
2015 Establishment Survey 2015 Establishment Survey 2015      
  Universe 2016 Universe 2016