Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
how many books are in the library of congress | 0.09 | 0.5 | 9918 | 21 |
how many books in the library of congress | 1.26 | 0.6 | 4681 | 33 |
how many books does the library of congress | 1.46 | 0.7 | 3082 | 63 |
how many books does library of congress have | 0.63 | 0.6 | 6477 | 41 |
library of congress has how many books | 1.49 | 0.2 | 3039 | 59 |