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Terms for subject Polygraphy containing back step | all forms | exact matches only | in specified order only
| English | Chinese |
| back mark; black-step marks; collating mark; nigger head; registrum | 折标 |
| back step marks ; collating mark | 配页记号 |
|
| English | Chinese |
| back mark; black-step marks; collating mark; nigger head; registrum | 折标 |
| back step marks ; collating mark | 配页记号 |