| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| heinlein future history books | 0.75 | 0.5 | 5548 | 49 | 29 |
| heinlein | 0.82 | 0.2 | 534 | 96 | 8 |
| future | 0.71 | 0.1 | 1720 | 63 | 6 |
| history | 1.03 | 0.7 | 5554 | 93 | 7 |
| books | 1.71 | 0.8 | 9701 | 61 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| heinlein future history books | 0.14 | 0.7 | 916 | 28 |
| heinlein future history timeline | 0.71 | 0.3 | 8316 | 68 |
| robert heinlein future history series | 1.56 | 0.7 | 8145 | 24 |
| robert heinlein future history | 1.82 | 0.4 | 1852 | 96 |
| heinlein future history chart | 1.23 | 0.8 | 1437 | 52 |
| robert heinlein future history timeline | 0.53 | 0.1 | 7780 | 71 |
| heinlein books free pdf | 1.24 | 0.4 | 8005 | 92 |
| heinlein books made into movies | 0.89 | 0.2 | 33 | 62 |
| list of heinlein books | 0.91 | 0.4 | 6700 | 89 |
| robert heinlein books pdf | 1.42 | 1 | 1673 | 6 |
| free books by heinlein online | 0.17 | 0.5 | 4848 | 23 |
| heinlein books to movies | 1.33 | 0.6 | 3242 | 79 |
| robert heinlein books by publishing date | 1.02 | 0.3 | 7138 | 54 |
| heinlein books in order published | 0.97 | 0.8 | 560 | 12 |
| robert a heinlein books | 1.34 | 0.9 | 5259 | 17 |
| heinlein books free download | 0.1 | 0.5 | 4058 | 12 |
| free books by robert heinlein | 0.59 | 0.3 | 2711 | 74 |
| robert heinlein books made into movies | 1.61 | 0.4 | 3343 | 40 |
| robert heinlein book list | 0.86 | 0.5 | 3600 | 20 |
