| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sources of historical documents | 0.64 | 0.4 | 6791 | 89 | 31 |
| sources | 0.25 | 0.9 | 4660 | 27 | 7 |
| of | 1.14 | 0.6 | 3099 | 36 | 2 |
| historical | 1.01 | 0.3 | 2723 | 32 | 10 |
| documents | 0.56 | 0.9 | 1200 | 36 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sources of historical documents | 1.98 | 0.3 | 7259 | 75 |
| legitimate sources for historical documents | 0.36 | 0.2 | 4779 | 45 |
| sources of historical information | 0.61 | 0.3 | 8476 | 40 |
| what are documented sources of history | 1.96 | 0.2 | 5244 | 83 |
| primary sources of historical information | 1.84 | 0.8 | 9678 | 65 |
| kinds of historical sources | 0.26 | 1 | 6296 | 62 |
| sources of historical data | 1.49 | 0.4 | 6931 | 81 |
| what are the historical sources | 1.02 | 0.7 | 6414 | 52 |
| history and historical sources | 1.77 | 0.8 | 6525 | 17 |
| types of historical sources | 0.2 | 0.7 | 9507 | 3 |
| examples of historical documents | 1.39 | 0.1 | 9666 | 34 |
| example of historical documents | 1.39 | 0.2 | 4651 | 87 |
| sources of history pdf | 1.79 | 0.3 | 2423 | 9 |
| historical primary source documents | 0.77 | 0.2 | 5823 | 55 |
| examples of historical sources | 0.9 | 0.9 | 1098 | 6 |
| sources of information in history | 0.5 | 0.2 | 7260 | 51 |
| the sources of history | 1.24 | 0.6 | 5053 | 98 |
| important documents through history | 0.85 | 0.1 | 1312 | 18 |
| source document in history | 1.53 | 0.5 | 2552 | 96 |
| is historic document a primary source | 1.09 | 0.1 | 5685 | 87 |
