| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| robert heinlein quotes on women | 1.97 | 0.7 | 6201 | 42 |
| robert a. heinlein quotes women | 1.73 | 0.8 | 4151 | 18 |
| quotes from robert heinlein | 1.34 | 0.4 | 315 | 65 |
| quotes and images robert heinlein | 0.52 | 0.2 | 9098 | 52 |
| robert a. heinlein quotes death | 1.59 | 1 | 8117 | 91 |
| robert heinlein quotes human being should | 0.35 | 0.2 | 2746 | 61 |
| robert heinlein quote celebrities | 1.37 | 0.8 | 943 | 95 |
| robert a. heinlein quotes country | 0.27 | 0.3 | 8233 | 96 |
| robert heinlein quotes on religion | 1.9 | 0.1 | 7338 | 42 |
| robert a. heinlein quotes sin | 0.43 | 0.6 | 6167 | 87 |
| robert a. heinlein quotes government | 1.68 | 0.5 | 9630 | 85 |
| best robert a heinlein books | 0.28 | 0.5 | 8188 | 96 |
| robert heinlein personal life | 0.16 | 0.7 | 4305 | 4 |
| free robert heinlein books | 1.94 | 0.9 | 9402 | 87 |
| books by robert a heinlein | 1.53 | 0.5 | 2411 | 65 |
| robert a heinlein book list | 1.08 | 0.9 | 9605 | 79 |
