| abbreviated | full |
|---|---|
| lofts | Leipzig Open Fragmentary Texts Series |
| opp | Open Philology Project |
| pdl | Perseus Digital Library |
| phi | Packard Humanities Institute |
| stoa | Stoa Latin Text Inventory |
| tlg | Thesaurus Linguae Graecae |
We’ve also seen abo = Abstract Bibliographic Object in work IDs, e.g. urn:cts:latinLit:phi0588.abo002, and 1st1K = First One-Thousand Years of Greek in edition IDs.