22 April (Bulgaria ) within release Christopher Columbus (1451-1506) goes into circulation Stamp Christopher Columbus (1451-1506) face value 4 Bulgarian lev
Stamp Christopher Columbus (1451-1506) in catalogues | |
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Michel: | Mi:BG 3980 |
Stamp is square format.
Stamp Christopher Columbus (1451-1506) it reflects the thematic directions:
Discovery is the act of detecting something new, or something previously unrecognized as meaningful. Concerning sciences and academic disciplines, discovery is the observation of new phenomena, new actions, or new events and providing new reasoning to explain the knowledge gathered through such observations with previously acquired knowledge from abstract thought and everyday experiences. A discovery may sometimes be based on earlier discoveries, collaborations, or ideas. Some discoveries represent a radical breakthrough in knowledge or technology.