| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| robert a heinlein biography | 1.22 | 0.9 | 4460 | 18 | 27 |
| robert | 1.24 | 0.5 | 9198 | 41 | 6 |
| a | 1.98 | 0.7 | 5698 | 25 | 1 |
| heinlein | 1.69 | 0.4 | 1728 | 30 | 8 |
| biography | 0.03 | 0.3 | 20 | 88 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| robert a heinlein biography | 1.27 | 0.7 | 7568 | 81 |
