Service Contract For The Control-Surveillance Of The Works And The Advice-Coordination On Environmental Matters Of The Construction Project Works For The Surface Rehabilitation Of Pavements And Improvement Of Road Safety On The R-2 Interior Highway (P.K. 0+000 To P.K. 10+100) And M-50 (P.K. 0+000 To P.K. 17+500).” Key 32-M-0012