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Child labor in the coal mines. In "Le Magasin pittoresque"
DFS09A11_094

Child labor in the coal mines. In "Le Magasin pitt...

Outside of a tunnel from the mine of Pittsburg
DFS09A07_069

Outside of a tunnel from the mine of Pittsburg

T.T. Bury, Liverpool, entrance of the railway tunnel
DFS09A02_403

T.T. Bury, Liverpool, entrance of the railway tunn...

J. Bourne, Kilsby's tunnel for the great northern railway
DFS09A05_469

J. Bourne, Kilsby's tunnel for the great northern ...

Airflow study, in the hydrodynamics tunnel of the l'O.N.E.R.A. (French National Aerospace Research Establishment) of the Concorde. Cross-section of the trailing edge, in landing configuration
DFS09A04_376

Airflow study, in the hydrodynamics tunnel of the ...

Issy-les-Moulineaux. Wind tunnel for airplanes (test chamber for model planes). In "Je sais tout".
DFS09A10_234

Issy-les-Moulineaux. Wind tunnel for airplanes (te...

Visualization, in the hydrodynamics tunnel of the O.N.E.R.A., of low-speed airflow around the model of a low-incidence supersonic transport. Above: without simulation of the jet engines. Below: with s...
DFS09A00_002

Visualization, in the hydrodynamics tunnel of the ...

J. Bourne, Kilsby's tunnel for the great northern railway
DFS09A05_470

J. Bourne, Kilsby's tunnel for the great northern ...