| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| project blue book hynek | 0.87 | 0.1 | 3272 | 56 |
| professor hynek blue book | 1.51 | 0.2 | 5008 | 17 |
| allen hynek blue book | 0.76 | 1 | 1660 | 19 |
| dr j allen hynek books | 1.32 | 0.7 | 1140 | 25 |
| dr j allen hynek bio | 1.13 | 0.1 | 8980 | 8 |
| dr j allen hynek | 0.98 | 0.3 | 8542 | 12 |
| j allen hynek books | 1 | 0.9 | 3848 | 61 |
| professor hynek project blue book | 1.23 | 0.6 | 6729 | 66 |
| dr hynek project blue book | 0.93 | 0.8 | 3126 | 16 |
| project blue book dr allen hynek | 0.1 | 0.7 | 3646 | 39 |
| dr. alan j hynek | 0.84 | 0.8 | 59 | 74 |
| j allen hynek bio | 1.44 | 0.2 | 570 | 24 |
| dr j allen hynek project blue book | 0.26 | 0.3 | 9508 | 51 |
| allen hynek project blue book | 1.01 | 1 | 1576 | 9 |
| blue book blue book project | 1.41 | 1 | 2901 | 59 |
| new project blue book | 0.62 | 0.3 | 9615 | 90 |
| project blue book book | 1.59 | 1 | 1055 | 40 |
| blue book project pdf | 1.11 | 0.3 | 7352 | 8 |
| project blue book wiki | 0.24 | 0.6 | 1472 | 22 |
| project blue book online | 1.33 | 0.6 | 4519 | 61 |
| the blue project book | 1.64 | 0.2 | 5826 | 78 |
| project blue book images | 1.32 | 0.5 | 4956 | 13 |
