| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| ebook booster | 0.77 | 0.1 | 1757 | 48 | 13 |
| ebook | 0.47 | 0.9 | 2916 | 75 | 5 |
| booster | 1.03 | 0.9 | 6683 | 22 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ebook booster | 1.81 | 0.6 | 7852 | 22 |
| u.s. history booster free ebook | 1.11 | 0.6 | 541 | 11 |
| u.s. history booster hertz free ebook | 1.74 | 0.9 | 3997 | 54 |
| us history book free | 0.36 | 0.1 | 3265 | 64 |
| free u.s. history books | 0.95 | 0.4 | 2595 | 36 |
| free us history textbook | 1.39 | 0.3 | 9990 | 69 |
| free history ebooks to download | 0.56 | 0.1 | 281 | 39 |
| online free us history textbook | 0.94 | 0.1 | 5840 | 8 |
| u.s. history textbook free online | 0.65 | 1 | 6019 | 64 |
| free us history textbook pdf | 1.29 | 0.6 | 4618 | 7 |
| free american history textbook | 0.79 | 0.5 | 7246 | 40 |
| american history free online textbook | 0.93 | 0.5 | 5854 | 62 |
| books free about history usa | 1.78 | 0.7 | 668 | 92 |
| american history free books | 0.22 | 0.2 | 5170 | 97 |
| history book free online | 0.77 | 0.4 | 968 | 50 |
| american history book online free | 1.01 | 0.5 | 2361 | 79 |
| online us history book | 1.29 | 0.7 | 879 | 37 |
| free history book download | 0.92 | 0.3 | 6580 | 57 |
| united states history book online | 0.81 | 1 | 8576 | 78 |
