albertype book printing chromotypography chromotypy chromoxylography collotype color printing duplication electronography electrostatic printing graphic arts gravure halftone engraving hectography history of printing job printing letterpress letterpress photoengraving line engraving lithography lithogravure lithophotogravure mimeograph mimeography offset offset lithography onset palaeotypography photo-offset photochemical process photoengraving photogelatin process photographic reproduction photography photolithography phototypography phototypy photozincography planographic printing planography printing printmaking publication publishing reduplication relief printing reproduction reprography rotary photogravure rotogravure rubbing sheetwork stencil three-color printing tracing transcription two-color printing typography typolithography wood-block printing xeroprinting xylotypography zincography