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Longines technicians install the apparatus for time recording with Chronocamera, 1950
UMG26A13_225

Longines technicians install the apparatus for tim...

Monitoring car doing measurement of air pollution, 1973.
UMG25A39_442

Monitoring car doing measurement of air pollution,...

Inspection of water and gas pipes, 1972.
UMG25A07_147

Inspection of water and gas pipes, 1972.