| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| robert heinlein time travel | 0.01 | 0.7 | 3555 | 90 | 27 |
| robert | 1.49 | 0.8 | 2251 | 46 | 6 |
| heinlein | 0.39 | 1 | 5301 | 80 | 8 |
| time | 1.53 | 1 | 6953 | 79 | 4 |
| travel | 1.82 | 0.2 | 6246 | 11 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| robert heinlein time travel | 1.88 | 0.8 | 1130 | 99 |
| robert heinlein time enough for love | 0.07 | 0.5 | 4007 | 6 |
| robert heinlein time enough for love quotes | 0.11 | 0.5 | 8936 | 38 |
| heinlein time travel story | 1.33 | 0.9 | 1037 | 63 |
| robert heinlein time for the stars | 1.62 | 0.1 | 1113 | 98 |
| robert heinlein future history timeline | 1.37 | 0.5 | 8107 | 96 |
| robert heinlein personal life | 1.1 | 0.8 | 4668 | 64 |
| robert heinlein future history | 0.8 | 0.4 | 2641 | 23 |
| robert a heinlein biography | 0.17 | 0.5 | 9950 | 91 |
| robert a heinlein books | 1.01 | 0.8 | 8257 | 83 |
| robert heinlein bibliography chronological | 0.42 | 0.1 | 28 | 93 |
| robert heinlein books online free | 0.23 | 0.9 | 9362 | 64 |
| robert a. heinlein | 1.18 | 0.1 | 8270 | 78 |
| robert a heinlein friday | 0.56 | 0.7 | 2433 | 44 |
| robert heinlein short stories | 1.31 | 0.3 | 5248 | 25 |
| robert a heinlein bio | 0.51 | 0.2 | 2160 | 21 |
| robert heinlein books pdf | 0.56 | 0.3 | 8939 | 71 |
| robert heinlein short stories online | 0.52 | 0.7 | 5659 | 31 |
| free robert heinlein books | 0.02 | 0.5 | 9013 | 84 |
| robert a heinlein wiki | 1.82 | 1 | 6076 | 88 |
| robert heinlein books to read | 0.12 | 0.7 | 996 | 26 |
