Germany stamp 2011
from the Germany Inventions series:
In Deutschland Zu Hause Einfallsreichtum Deutsche Erfindungen - 55
(At home in Germany, German ingenuity inventions)
Technology:
Gramophone by Emile Berliner in 1887
Tape by Fritz Pfleumer 1928
mp3 from the Fraunhofer Institute in 1987
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