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| Tag | Ind 1 | Ind 2 | Subfield Codes | Definition |
| 899 | Special use codes for aggregators and other collections and projects (formerly RLIN Local Series Field). For valid codes, see table of MARC 899 Codes | |||
*blank | Electronic (old form using plain text such as aclsebks) | |||
| 0 | Local digitization electronic collections (Electronic versions of local physical holding collections such as CULectures) | |||
1 | Print and other (Local collections such as Maeda_Bunko) | |||
2 | Enhanced electronic (Those electronic collections that have database and provider codes generated by the ERM such as PRVEBS_EHX) | |||
| $a | Code for vendor |
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| Tag | Ind 1 | Ind 2 | Subfield Codes | Definition |
| 901 | ARCHIVAL CONTAINER INFORMATION | |||
| $a | Container attributes |
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