Datasets:
Notice and attribution
Source collection: https://rock.pollub.pl/collections/a42db069-319d-4d51-88d1-490ee7e6bad8 Publisher policy: https://wpl.pollub.pl/pl/i/Polityka-publikacyjna/20
The eight retained books expose CC-BY-SA-4.0 in both the item record and the metadata of the matched original PDF bitstream. Per-record authors, titles, source URLs, license evidence and source-file checksums are preserved in artifacts/attribution.jsonl and artifacts/inventory.json.
Transformations: PDF text extraction with pdfplumber, Unicode and whitespace normalization, page-number-only removal, line-wrap repair, limited email and labelled-phone redaction, and within-source exact/near deduplication. Images are excluded. Isolated unreadable PDF glyphs are represented as [UNREADABLE_GLYPH]. Attribution and ShareAlike obligations remain applicable.