http://dewey.info/scheme/e22/
600 Tegnologie
650 Bestuur & openbare betrekkinge
650 Bestuur & hulpdienste 651 Kantoordienste 652 Prosesse van geskrewe kommunikasie 653 Snelskrif [654] [Nie toegeken nie] [655] [Nie toegeken nie] [656] [Nie toegeken nie] 657 Rekeningkunde 658 Algemene bestuur 659 Reklame & openbare betrekkinge
Dewey Decimal Classification: Summaries
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