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| Types |
|---|
| academic document [1] |
| administrative record [37] |
| archival material [155] |
| article [8199] |
| book [19] |
| book chapter [204] |
| collective labor agreement [13550] |
| conference papers and proceedings [75] |
| correspondence [1] |
| dataset [2] |
| fact sheet [4] |
| government record [47] |
| image [1] |
| interview [7] |
| legal document [1849] |
| newsletter [230] |
| other [165] |
| pamphlet [2] |
| periodical [2263] |
| preprint [541] |