Contracting Of The Supervision Of The Work Improvement And Expansion Of Vehicular And Pedestrian Transitability Of The Ecological Interconnection Road Between Tio Grande - Tio Chico - Pedro Vilcapaza And Pasos Del Señor, District Of Sachaca - Province Of Are - Contracting Of The Supervision Of The Work Improvement And Expansion Of Vehicular And Pedestrian Transitability Of The Ecological Interconnection Road Between Tio Grande - Tio Chico - Pedro Vilcapaza And Pasos Del Señor, District Of Sachaca - Province Of Arequipa - Department Of Arequipa¿, Cui 2389879