Procedure Open With The Criteria Of The Economically Most Advantageous Offer For The Assignment Of Works For The Improvement Of Pedestrian Routes In The Historic Center And Construction Of Cycle Tracks To Be Realized In The Urban Regeneration Regeneration Of Sustain Dalsu Apulia With Priority Axis Xii - "Sustainable Urban Development - Sus" Of The Po Erdf-Esf 2014-2020 (EXPIRED)