Hiring Supply And Installation Services Of Metallic Structure Included Accessories And Metallic Column At Full Cost For The Project: Improvement And Expansion Sports And/Or Recreational Practice In The Sports Slab Of Center Populated D - Contracting Of Supply Services And Installation Of Metallic Structure Included Accessories And Metal Column At Full Cost For The Project: Improvement And Expansion Sports And/Or Recreational Practice In The Sports Slab From Carmenpampa Of The District Of Ayna ¿The Sea ¿Ayac