The Half-tone Process, a Practical Manual of Photo-engraving in Half-tone on Zinc, Copper, and Brass, With Chapters on Three-colour Work and Photo-lithography of Offset Printing. Questo articolo non è disponibile.The Half-tone Process, a Practical Manual of Photo-engraving in Half-tone on Zinc, Copper, and Brass, With Chapters on Three-colour Work and Photo-lithography of Offset Printing

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