Sources
Updated 2026-09-05
Traceability
Each guide lists sources at the foot. Cited standards (EN ISO 13788 and national decrees) are institutional or paid documents: we report their sense, not the full text.
Updated 2026-09-05
Each guide lists sources at the foot. Cited standards (EN ISO 13788 and national decrees) are institutional or paid documents: we report their sense, not the full text.