Zzp.261.04.2026 Graphic Processing Service/Basic Retouching Of Scans Of Digitized Materials And Substantive Verification And Introduction Of Resulting Changes To Digital Files Of Digitized Materials For The Purposes Of The Project Entitled: Digitization And Sharing Of Digital Resources Of The Polish Music Publishing House And The Polish Composers' Union Implemented Under Measure Ferc.02.03. "Digital Availability And Re-Use Of Information" Under Priority Ii Of The European Funds For Digital Development 2021-2027 Program