BS 1000[681.6]:1989 - Universal Decimal Classification. English full edition - Graphic reproduction machines and equipment
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Under 681.6 is classed information about mechanical details of machines for reproducing material in graphic form, including typewriters and machinery for printing by all the various processes, i.e. relief, intaglio, planographic and screen stencil, machines for the production of printinh surfaces, including composing and casting machine and their components, and devices, for stamping, franking, perforating and otherwise visually identifying documents.
