Sources that are NOT redistributable. Cite as reference only; never paste tables, figures, or scanned values:
- CRC Handbook (Taylor & Francis) — proprietary
- ASM Handbook (ASM International) — proprietary
- MatWeb — proprietary aggregator, no redistribution
- MMPDS-02+ (Battelle, post-MIL-HDBK-5J) — commercial
- Vendor datasheets: Saint-Gobain/Luxium, Eljen, Furukawa, C&A, Kuraray, Rogers, Isola — proprietary, all-rights-reserved
- CIE booklets — sold; use colour-science (BSD-3) instead for re-licensed colorimetric data
- Paywalled academic papers — cite DOI; never embed figures/tables
Action: add a "Sources off-limits for redistribution" section to CONTRIBUTING.md (or new docs/data-policy.md). Include guidance: "Re-typing a single value from a vendor datasheet with attribution = fact extraction (acceptable); copying tables = infringement risk."
Sources that are NOT redistributable. Cite as reference only; never paste tables, figures, or scanned values:
Action: add a "Sources off-limits for redistribution" section to CONTRIBUTING.md (or new docs/data-policy.md). Include guidance: "Re-typing a single value from a vendor datasheet with attribution = fact extraction (acceptable); copying tables = infringement risk."