C13-26 Open European Procedure, Pursuant To Art. 71 Of Legislative Decree 36/2023 And Subsequent Amendments, Divided Into 3 Lots, For Assignment Through A Framework Agreement, Pursuant To Art. 59, Paragraph 3, Legislative Decree 36/2023 And Subsequent Amendments, Lasting Two Years (24 Months), With The Option Of Extension For A Further 24 Months, Of The Organization And Management Service Of The Pre-Selection Tests