Services Contract For The Technical Assistance Of Quality Control Of The Works Of The Construction Project. Variant Of Sant Miquel De Balenyà, Northeast Section. Of The Pk 4+600 Of The Bv-5305 To The Pk 6+900 Of The Bv-5303. His. Key: Vb-2062.1.F1 And Aa-Vb-2062.1.F1