When blue is blue

Scientific treatise and study on the composition of the paint on the Protectorate 5h blue linden leaf stamp. Study of the dependence of the amount of paint on the color shade of postage stamps.

03. 05. 2025
Complete description

Post and postal services:
Slovak Post can be a mobile operator

Slovak Post can be a mobile operator
Author: Vojtech Jankovič
Source: www.sme.sk
Published: 20. 01. 2013 08:52

Angličtina / English

Use translation by Google Translate (no guarantee).

Úvaha o rozširovaní služieb Slovenskej pošty v oblasti nepoštových služieb.

Základné informácie:


Author: Vojtech Jankovič
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