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Longines technicians test the apparatus for time recording with Chronocamera, 1950
UMG26A13_223

Longines technicians test the apparatus for time r...

Longines technicians test the apparatus for time recording with Chronocamera, 1950
UMG26A13_224

Longines technicians test the apparatus for time r...

The Greatest Victory of Soviet Science & Technology -
UMG22A52_060

The Greatest Victory of Soviet Science & Technolog...

RCA's New Radio Beam System
UMG20A13_164

RCA's New Radio Beam System