"Modificazioni ed aggiunte alla legge 9 luglio 1908 n. 420 ed alla legge 6 luglio 1911 n. 677"

This procedure concerns modifications and additions to two Italian laws from 1908 and 1911. These laws likely relate to the regulation and execution of public works projects within Italy. The changes will affect entities involved in public works, potentially including construction companies, government agencies, and citizens impacted by infrastructure development.