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Distance measurement method on postage stamps (and not only on postage stamps)

Distance measurement method on postage stamps (and not only on postage stamps)
Author: Rudolf Šulej
Source: www.postoveznamky.sk
Published: 29. 04. 2020 18:57

Method of measuring distances in distinguishing printing plates used for printing by offset and recess printing from flat bed echniques.




Author: Rudolf Šulej

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