| books periodicals and newspapers | 0.9 | 0.7 | 4777 | 32 | 59 |
| what are books and periodicals | 0.74 | 0.2 | 4974 | 30 | 44 |
| book and periodical publishing | 1.25 | 0.5 | 7061 | 30 | 28 |
| books and periodicals meaning | 0.2 | 0.4 | 1530 | 29 | 22 |
| list of periodicals & journals | 0.65 | 0.3 | 3608 | 30 | 37 |
| what are news periodicals | 0.06 | 0.9 | 1657 | 25 | 17 |
| what is a periodicals | 1.23 | 0.7 | 5540 | 21 | 5 |
| is a newspaper a periodical | 0.29 | 0.3 | 4693 | 27 | 100 |
| what is periodical publishing | 0.53 | 1 | 9294 | 29 | 83 |
| popular and scholarly periodicals | 1.15 | 0.7 | 7987 | 33 | 79 |
| periodicals of the press | 1.96 | 0.4 | 4040 | 24 | 31 |
| what are business periodicals | 0.9 | 0.4 | 6796 | 29 | 36 |
| readers guide to periodicals | 1.2 | 0.1 | 7666 | 28 | 42 |
| publication type:periodical | 1.76 | 0.7 | 8088 | 27 | 64 |
| is a periodical a newspaper article | 0.44 | 0.6 | 5424 | 35 | 39 |
| what is a periodical journal | 1.5 | 0.1 | 5712 | 28 | 23 |
| what is popular periodical | 1.01 | 1 | 7961 | 26 | 46 |
