2 Free Photos of Atomuhr Cs4

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Atomuhr CS4 caesium clock, Physikalisch-Technische Bundesanstalt, Braunschweig, 1992 - Braunschweigisches Landesmuseum - DSC04949
self-published workatomuhr cs4
Atomuhr CS4 caesium clock, Physikalisch-Technische Bundesanstalt, Braunschweig, 1992 - Braunschweigisches Landesmuseum - DSC04952
self-published workatomuhr cs4
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