Country scientific production
| Country | Frequency | Country | Frequency |
|---|---|---|---|
| China | 4,117 | Ukraine | 166 |
| USA | 999 | France | 159 |
| UK | 651 | Vietnam | 157 |
| India | 534 | Jordan | 124 |
| Malaysia | 374 | Russia | 120 |
| Australia | 301 | Canada | 118 |
| Italy | 301 | Poland | 107 |
| Indonesia | 262 | Switzerland | 106 |
| Pakistan | 207 | Bangladesh | 92 |
| South Korea | 199 | South Africa | 87 |
| Germany | 197 | Brazil | 83 |
| Saudi Arabia | 185 | Ghana | 72 |
| Spain | 185 |
| Country | Frequency | Country | Frequency |
|---|---|---|---|
| China | 4,117 | Ukraine | 166 |
| USA | 999 | France | 159 |
| UK | 651 | Vietnam | 157 |
| India | 534 | Jordan | 124 |
| Malaysia | 374 | Russia | 120 |
| Australia | 301 | Canada | 118 |
| Italy | 301 | Poland | 107 |
| Indonesia | 262 | Switzerland | 106 |
| Pakistan | 207 | Bangladesh | 92 |
| South Korea | 199 | South Africa | 87 |
| Germany | 197 | Brazil | 83 |
| Saudi Arabia | 185 | Ghana | 72 |
| Spain | 185 |
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