Items where Subject is "600 Technology/Teknologi > 650 Management, Public Relations, Business and Auxiliary Service/Manajemen, Hubungan Masyarakat, Bisnis dan Ilmu yang Berkaitan > 652 Process of Written Communication/Proses Komunikasi Tertulis di Perkantoran > 652.4 Duplication of Records Methods/Metode Penduplikasian Dokumen"