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10 gen 1870 anni - Collotype, or photogelatin printing

Descrizione:

photomechanical printing process that gives accurate reproduction because no halftone screen is employed to break the images into dots.

Aggiunto al nastro di tempo:

printing

16 ott 2017

0

0

1209

Data:

10 gen 1870 anni

Adesso

~ 155 years ago

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