| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| types of historical sources | 0.89 | 0.1 | 3116 | 48 | 27 |
| types | 1.72 | 0.5 | 3800 | 41 | 5 |
| of | 0.71 | 0.8 | 6802 | 71 | 2 |
| historical | 1.09 | 0.1 | 9145 | 40 | 10 |
| sources | 1.04 | 0.7 | 1598 | 17 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| types of historical sources | 1.07 | 0.6 | 1182 | 88 |
| types of historical sources and examples | 1.85 | 0.6 | 7775 | 81 |
| different types of historical sources | 0.93 | 0.2 | 9570 | 42 |
| what are the types of historical sources | 1.63 | 0.3 | 8261 | 98 |
| two types of historical sources | 0.12 | 1 | 6449 | 44 |
| 3 types of historical sources | 0.34 | 0.2 | 1072 | 22 |
| what are the two types of historical sources | 0.5 | 0.5 | 135 | 100 |
| types of historical information sources | 1.84 | 0.6 | 3217 | 28 |
| there are three types of historical sources | 1.64 | 0.9 | 9265 | 91 |
| 2 types of historical sources | 0.94 | 0.5 | 2511 | 82 |
