| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| space book pdf free download | 0.61 | 0.8 | 5873 | 3 |
| first big book of space pdf download free | 1.41 | 0.6 | 4889 | 29 |
| book on space pdf | 1.06 | 1 | 2787 | 36 |
| space books for free | 0.32 | 0.1 | 6737 | 95 |
| free online space books | 1.52 | 0.2 | 4759 | 74 |
| space book for kids | 1.35 | 1 | 3454 | 66 |
| space book for children | 1.82 | 0.5 | 5665 | 35 |
| space books for kids free | 1.3 | 0.8 | 4709 | 97 |
| a book about space | 0.76 | 1 | 8394 | 55 |
| book related to space | 0.05 | 1 | 5023 | 92 |
| space books to read | 1.02 | 0.6 | 7042 | 100 |
| amazon books about space | 0.65 | 0.6 | 3483 | 41 |
| space science books pdf | 1.54 | 0.3 | 7062 | 56 |
| all about space book | 0.17 | 0.3 | 6947 | 23 |
| space book for adults | 0.95 | 0.6 | 4619 | 92 |
| space books for children fiction | 1.38 | 0.6 | 8663 | 61 |
| online space books for kids | 1.49 | 1 | 5489 | 97 |
| books on space programs | 1.77 | 0.3 | 5705 | 46 |
| children books about space | 0.57 | 0.9 | 4633 | 63 |
