BPG is committed to discovery and dissemination of knowledge
Total Visits of This Article
2021 | Number of total visits
Rank Countries/Territories Count Percent
1 United States 18 56.2%
2 China 4 12.5%
3 Netherlands 3 9.4%
4 Russia 2 6.2%
5 Spain 2 6.2%
6 France 2 6.2%
7 Germany 1 3.1%