Specialist Services For Reconnaissance Activities And Proposals For The Candidacy Of Design In The Context Of European Programming And Specialist Study On Historic Mountain Roads, As Part Of The "Construction And Updating Of The Regional Cadastre Of The Hiking Network Of Lombardy, The Register Of Historic Mountain Roads Of Historical Interest And The Special Section Ippovie (Lr 5/2017) For The Period 1.4.2025 31.12.2027" "