Contracting For The Execution Of The Work: Improvement Of The Vehicular And Pedestrian Transitability Services Of Av. Los Alisos - Canta Callao Section - Av. Nestor Gambeta - District Of Callao - Province Of Callao - Department Of Callao ¿ With - Contracting For The Execution Of The Work: Improvement Of The Vehicular And Pedestrian Transitability Services Of Av. Los Alisos - Canta Callao Section - Av. Nestor Gambeta - District Of Callao - Province Of Callao - Department Of Callao ¿ With Cui 2486858.