Acquisition Of Two (02) Differential Surveying Gps/Gnss Receiver And Data Collector - Acquisition Of Two (2) Differential Surveying Gps/Gnss Receivers And Data Collector For The Activity "Improvement Of Operational Technical Cadastre Services Of Water And Sanitary Sewer Networks Within Scope Of Responsibility Of Seda Ayacucho, 5 Districts Of The Province Of Huaman