READY-MIXED CONCRETE FC 210 kg/cm2 - ACQUISITION OF READY-MIXED CONCRETE FC 210 KG/CM2 INCLUDES PUMPING for the work IMPROVEMENT OF THE EDUCATIONAL SERVICE OF THE I.E. 40158 THE GREAT AMAUTA PP.JJ. THE FUTURE DISTRICT OF MIRAFLORES, AREQUIPA, AREQUIPA (EXPIRED)