| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| online history books free | 1.52 | 0.4 | 5776 | 55 | 25 |
| online | 0.24 | 0.6 | 2451 | 75 | 6 |
| history | 0.73 | 0.9 | 6982 | 86 | 7 |
| books | 1.24 | 1 | 4071 | 82 | 5 |
| free | 0.57 | 0.2 | 3883 | 14 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| online history books free | 0.4 | 0.1 | 3257 | 88 |
