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10 résultats pour : energy conservation

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Initiative Committee for the Protection of the Rheinau at the Federal Council, 1954
UMG25A25_096

Initiative Committee for the Protection of the Rhe...

Demonstrators against power plant construction, Rheinau 1952
UMG25A20_136

Demonstrators against power plant construction, Rh...

Fuelling low-lead petrol, 1971.
UMG25A27_473

Fuelling low-lead petrol, 1971.

Fuelling low-lead petrol, 1971.
UMG25A28_140

Fuelling low-lead petrol, 1971.

NASA Trial Windmill
UMG24A16_015

NASA Trial Windmill

Car-free sunday in Milan.
UMG23A05_063

Car-free sunday in Milan.

Car-free sunday in Milan.
UMG23A05_062

Car-free sunday in Milan.

Electric plow.
UMG23A01_137

Electric plow.

Family Huddled By Fireplace
UMG20A22_214

Family Huddled By Fireplace

Iron Age forge in Mafuga Forest. A forge used by forestry workers to harden the tips of rock drills
UMG12A14_109

Iron Age forge in Mafuga Forest. A forge used by f...