| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| examples of primary historical sources | 1.63 | 0.2 | 6080 | 89 | 38 |
| examples | 0.29 | 0.8 | 2109 | 68 | 8 |
| of | 0.45 | 1 | 7011 | 26 | 2 |
| primary | 1.91 | 0.6 | 382 | 18 | 7 |
| historical | 1.97 | 0.2 | 773 | 58 | 10 |
| sources | 1.4 | 0.4 | 9609 | 16 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| examples of primary historical sources | 1.04 | 0.1 | 4541 | 13 |
